{"data":{"slug":"coros-pace-4-pro","type":"smartwatch","brand":"COROS","name":"PACE 4 Pro","aliases":["COROS PACE 4 Pro","W337","WPACE4P-BLK-N","WPACE4P-BLK","WPACE4P-WHT"],"release_date":"2026-09","url":"https://arkivo.dev/smartwatches/coros-pace-4-pro","specs":{"series":"PACE","model_numbers":["WPACE4P-BLK-N","WPACE4P-BLK","WPACE4P-WHT","W337"],"gtins":["810005786874","810005786676","810005786683"],"announce_date":"2026-09-22","status":"available","predecessor":null,"successor":null,"launch_price_usd":449,"launch_price_eur":449,"markets":["US","DE"],"colors":["Black / Nylon","Black / Silicone","White / Silicone"],"manufacturer_url":"https://coros.com/pace4pro","spec_sheet_url":"https://coros.com/pace4pro/specs","manual_url":"https://support.coros.com/hc/en-us/articles/53610991583508-Set-Up-Your-COROS-PACE-4-Pro","eprel_registration_number":null,"warranty_years":2,"segment":"sport","os_updates_years":null,"security_updates_until":null,"case_sizes_mm":[47.6],"case_shape":"round","case_material":"fibre_reinforced_polymer","case_material_name":"Fiber Reinforced Polymer cover with Grade 5 Titanium Alloy bezel","back_material":null,"case_dimensions_mm":{"height_mm":47.6,"width_mm":47.6,"thickness_mm":11.8},"weight_g":38,"weight_with_strap_g":43,"water_resistance_atm":5,"water_resistance_standard":null,"ip_rating":null,"dive_rating":null,"dive_max_depth_m":null,"mil_std_810":null,"mil_std_810_tests":null,"operating_temperature_c":{"min_c":-20,"max_c":50},"display_technology":"ltpo_oled","display_technology_name":"LTPO AMOLED Display","screen_size_in":1.47,"resolution":{"width_px":466,"height_px":466},"pixel_density_ppi":null,"display_area_mm2":null,"touchscreen":true,"refresh_rate_max_hz":60,"refresh_rate_min_hz":1,"brightness_peak_nits":3500,"brightness_min_nits":2,"always_on_display":true,"display_cover_material":"sapphire","display_cover":"Sapphire Glass","platform":"proprietary","os_at_launch":null,"os_skin":null,"os_latest":"V3.2008.0","compatible_phone_os":["ios","android"],"phone_os_requirement":null,"third_party_apps":false,"voice_assistants":["Voice Control"],"chipset":null,"process_node_nm":null,"cpu_core_count":null,"cpu_clusters":null,"cpu_max_ghz":null,"gpu":null,"low_power_coprocessor":null,"ram_gb":[0.064],"storage_gb":[32],"heart_rate_sensor":"Optical heart rate monitor, multi-channel PPG","ecg":null,"spo2":true,"skin_temperature":null,"blood_pressure":null,"bioimpedance":null,"eda_sensor":null,"medical_clearances":null,"accelerometer":true,"accelerometer_max_g":null,"gyroscope":true,"barometer":true,"compass":true,"ambient_light_sensor":null,"depth_gauge":null,"depth_gauge_max_m":null,"water_temperature_sensor":null,"health_features":["blood_oxygen_app","hrv","sleep_tracking","sleep_stages","stress_tracking","cycle_tracking"],"fitness_features":["vo2_max","training_load","recovery_advice","pool_swim","open_water_swim","interval_workouts","route_navigation","turn_by_turn_navigation","trackback"],"sport_profiles_count":null,"dive_modes":null,"external_sensor_types":["heart_rate_strap","power_meter","speed_cadence","foot_pod"],"fall_detection":null,"crash_detection":null,"emergency_sos":true,"emergency_siren_db":null,"live_tracking":true,"led_flashlight":false,"positioning":["GPS","GLONASS","Galileo","BeiDou","QZSS"],"dual_frequency_gnss":true,"offline_maps":true,"bluetooth":true,"bluetooth_version":null,"wifi":true,"wifi_standard":"wifi_6","wifi_bands":["2.4ghz"],"cellular":false,"network_technologies":null,"bands_4g":null,"bands_5g":null,"nfc":null,"nfc_payments":false,"payment_services":null,"uwb":null,"satellite_connectivity":["none"],"ant_plus":false,"speaker":true,"microphone_count":null,"calls_on_watch":"phone_only","offline_music":true,"button_count":2,"hardware_buttons":["Back/Lap Button","Action Button"],"crown":"rotating","rotating_bezel":null,"gesture_controls":["Raise wrist to wake display"],"battery_capacity_mah":447,"battery_life_claimed":[{"mode":"smartwatch","with_solar":false,"hours":504},{"mode":"always_on","with_solar":false,"hours":168},{"mode":"gps_autoselect","with_solar":false,"hours":40},{"mode":"gps_all_systems","with_solar":false,"hours":60},{"mode":"gps_all_systems_always_on","with_solar":false,"hours":45},{"mode":"gps_all_systems_with_music","with_solar":false,"hours":17},{"mode":"gps_dual_frequency","with_solar":false,"hours":40},{"mode":"gps_dual_frequency_always_on","with_solar":false,"hours":30},{"mode":"gps_dual_frequency_with_music","with_solar":false,"hours":15}],"battery_life_smartwatch_claimed_h":504,"battery_life_always_on_claimed_h":168,"battery_life_gps_claimed_h":null,"solar_charging":null,"charging_method":"proprietary_plug","charging_notes":"The COROS A2 charging adapter clips onto the watch and takes any standard USB-C cable. COROS asks for an LPS-certified charger and says to use only 5V/1A charging ports with no fast-charge cables or power banks.","charging_max_w":null,"fast_charging":null,"quick_charge":{"charge_min":30,"use_h":10},"charge_time_0_80_min":null,"charge_time_0_100_min":90,"measured_brightness_nits":null,"measured_battery_active_use_h":null,"battery_life_measured":null,"measured_charge_time_min":null,"band_width_mm":22,"quick_release":true,"band_compatibility":"22 mm quick-release straps","band_material":"nylon","band_name":"Black nylon band","band_sizes":[{"size_label":"Nylon","wrist_min_mm":135,"wrist_max_mm":205}],"fcc_ids":["2BBGF-W337"],"sar_limb_w_kg":0.343,"sar_eu_limb_w_kg":null,"other_certifications":null,"in_the_box":["COROS PACE 4 Pro GPS Watch","COROS A2 Charging Adapter"],"charger_in_box":false},"variants":[{"model_number":"WPACE4P-BLK-N","gtin":"810005786874","colors":["Black / Nylon"],"weight_with_strap_g":43,"band_material":"nylon","band_name":"Black nylon band","band_sizes":[{"size_label":"Nylon","wrist_min_mm":135,"wrist_max_mm":205}]},{"model_number":"WPACE4P-BLK","gtin":"810005786676","colors":["Black / Silicone"],"weight_with_strap_g":51,"band_material":"silicone","band_name":"Black silicone band","band_sizes":[{"size_label":"Silicone","wrist_min_mm":140,"wrist_max_mm":220}]},{"model_number":"WPACE4P-WHT","gtin":"810005786683","colors":["White / Silicone"],"weight_with_strap_g":51,"band_material":"silicone","band_name":"White silicone band","band_sizes":[{"size_label":"Silicone","wrist_min_mm":140,"wrist_max_mm":220}]}],"sources":[{"url":"https://coros.com/pace4pro/specs","kind":"manufacturer_page","accessed":"2026-10-14","fields":["series","spec_sheet_url","case_shape","case_sizes_mm","case_material","case_material_name","case_dimensions_mm","weight_g","weight_with_strap_g","water_resistance_atm","operating_temperature_c","display_technology","display_technology_name","screen_size_in","resolution","display_cover_material","display_cover","storage_gb","heart_rate_sensor","spo2","accelerometer","gyroscope","barometer","compass","bluetooth","wifi","dual_frequency_gnss","positioning","offline_maps","speaker","button_count","hardware_buttons","crown","band_width_mm","quick_release","band_compatibility","band_material","band_name","band_sizes","charge_time_0_100_min","health_features","fitness_features","external_sensor_types","touchscreen","battery_life_claimed","variants"],"notes":{"series":"The page is the COROS PACE 4 Pro product. COROS names the PACE line.","case_shape":"The display is round and the case outline in the maker product images is round.","case_sizes_mm":"COROS publishes no marketed case size. 47.6 mm is the stated length and width of the case.","case_material":"Materials: cover material Fiber Reinforced Polymer, bezel material Grade 5 Titanium Alloy. The overview and store copy also say TC4 titanium alloy, which is the same alloy as Grade 5. T3 and the5krunner describe a polymer body with a titanium bezel, so the housing is not classed as titanium.","case_material_name":"Materials > Cover Material and Bezel Material.","case_dimensions_mm":"Size and Weight > Dimensions 47.6 x 47.6 x 11.8 mm. Height does not include the optical heart rate sensor. The overview calls 11.8 mm the width, but the spec table and reviews treat it as thickness.","weight_g":"The overview comparison lists body weight 38 g for the PACE 4 Pro. The German page calls it Gehäusegewicht.","weight_with_strap_g":"Size and Weight: 43 g with nylon band, 51 g with silicone band. The base value is the nylon band. The silicone rows are in the variants.","water_resistance_atm":"Durability > Water Resistance 5 ATM, suitable for surface water activities and not for diving.","operating_temperature_c":"Durability > Working Temperature -20 to 50 C. Storage -20 to 60 C is a separate range.","display_technology_name":"Display > Display Type LTPO AMOLED Display.","screen_size_in":"Display > Display Size 1.47 inches.","display_cover":"Materials > Screen Material Sapphire Glass.","storage_gb":"Memory > Internal Memory 32GB, shared by music and maps. The support article Playing Music from Your COROS Watch still says 4GB for the PACE 4 Pro, which looks like an unchanged line from the PACE 4. The spec table, the buy page and reviews say 32GB.","heart_rate_sensor":"Data Tracking lists an Optical Heart Rate Monitor, and the overview says the latest multi-channel PPG sensor. Tattoos may affect readings.","spo2":"Data Tracking lists an Optical Pulse Oximeter.","positioning":"Geo Location > Satellite Systems lists GPS, GLONASS, Galileo, Beidou and QZSS. Signal bands per system are not listed.","dual_frequency_gnss":"Geo Location > GNSS Chipset reads All-Satellite Dual-Frequency.","offline_maps":"Navigation lists downloadable Landscape and Topo global maps, and 32GB holds them.","bluetooth":"Connectivity lists Bluetooth for accessories and phone. No Bluetooth version is published.","wifi":"Connectivity > Data Sync Wi-Fi / COROS App.","speaker":"Data Tracking lists a speaker to take hands-free calls or play activity alerts out loud. The setup guide lists a Drain the Speaker control.","button_count":"Design lists Digital Dial, Back Button and Action Button. The dial is a rotating control and is not counted in the two buttons.","hardware_buttons":"Design: Back Button and Action Button. Setup guide names them Back/Lap Button and Action Button.","crown":"The Digital Dial scrolls and presses to confirm. No haptic claim.","band_width_mm":"Watch Band > Width 22mm.","quick_release":"Watch Band > Installation Type Quick Release.","band_compatibility":"Watch Band > Width 22mm with Quick Release installation.","band_material":"Materials > Band Material Silicone / Nylon. The base is the Black nylon package. The silicone SKUs are variants.","band_name":"The COROS store names the options Black / Nylon, Black / Silicone and White / Silicone.","band_sizes":"Watch Band: nylon 135-205 mm, silicone 140-220 mm.","charge_time_0_100_min":"Battery > Charging Time About 1.5 hours. The store FAQ says approximately 1.5 hours from 0 to 100% in normal temperature. Stored as 90 minutes, a nominal claim and not a measured test.","health_features":"Data Tracking > Daily Features lists Daily Stress, Sleep with REM tracking, HRV and Wellness Check. The setup guide describes sleep stages, overnight HRV, menstrual cycle tracking and the SpO2 oximeter. Resting heart rate is read every 10 minutes in daily use, so continuous heart rate is not stored. Tom's Guide says the watch has no readiness score.","fitness_features":"EvoLab lists recovery, fatigue, training load and VO2 max. Basic Interval Training is named. Supported Activity Modes list Open Water and Pool Swim. Navigation lists Back-To-Start, and the setup guide describes Turn by Turn and Back to Start retracing your GPS track. Running dynamics need a COROS POD, so they are not stored.","external_sensor_types":"The buy page FAQ names heart rate monitors, cycling power meters, cadence sensors, speed sensors and the COROS POD 2 running dynamics pod, all over Bluetooth. No smart-trainer capability is stated.","touchscreen":"Display copy says 1.47 inch touchscreen display, and the setup guide has Touchscreen settings.","battery_life_claimed":"Battery > All Systems On 60 h (45 h with Always-On Display, 17 h with offline music playing), Dual Frequency 40 h (30 h with Always-On Display, 15 h with offline music playing), Daily Use 21 days (7 days with Always-On Display). The Battery Specifications article adds Auto 40+ hours (30+ with Always-On Display), which is stored as 40 with the plus sign here. Days are converted to hours exactly. The 17 and 15 hour music rows do not state the display setting. The store FAQ calls the 45 h figure MAX GPS with dual frequency, which conflicts with the spec table and the battery article, so the spec table is followed.","variants":"Three SKUs on the COROS store: Black / Nylon, Black / Silicone and White / Silicone. A White / Nylon option is mentioned by T3 and PlayBetter but is not sold on the COROS store."}},{"url":"https://coros.com/pace4pro","kind":"manufacturer_page","accessed":"2026-10-14","fields":["manufacturer_url","segment","brightness_peak_nits","brightness_min_nits","refresh_rate_max_hz","refresh_rate_min_hz","weight_g","dual_frequency_gnss","quick_charge"],"notes":{"manufacturer_url":"COROS PACE 4 Pro overview page.","segment":"COROS calls it a GPS sport watch and a multisport watch with dedicated run, bike, swim, triathlon and multi-sport modes.","brightness_peak_nits":"Maker claim of a 3,500 nit AMOLED display. Auto-Brightness is described as from 3,500 nits at noon to 2 nits at 2AM. Window size and test conditions are not stated, so it is a claim and not a measurement.","brightness_min_nits":"Auto-Brightness range ends at 2 nits at 2AM.","refresh_rate_max_hz":"The adaptive refresh rate moves from 60Hz to 1Hz LTPO.","refresh_rate_min_hz":"The same text gives 1Hz as the lowest rate. It is the LTPO idle rate.","weight_g":"PACE 4 Pro body weight 38 g in the comparison.","dual_frequency_gnss":"Overview: dual-frequency GPS.","quick_charge":"The buy page FAQ says 30 minutes of charging returns roughly 10 hours of GPS. The GPS mode is not stated."}},{"url":"https://shop.coros.com/products/coros-pace-4-pro","kind":"manufacturer_page","accessed":"2026-10-14","fields":["model_numbers","gtins","colors","status","launch_price_usd","markets"],"notes":{"model_numbers":"COROS store product JSON lists three SKUs: WPACE4P-BLK-N, WPACE4P-BLK and WPACE4P-WHT. W337 is the regulatory model from the FCC filing.","gtins":"Variant barcodes: WPACE4P-BLK-N 810005786874, WPACE4P-BLK 810005786676, WPACE4P-WHT 810005786683.","colors":"Option names on the store, verbatim: Black / Silicone, White / Silicone, Black / Nylon.","status":"All three variants are marked available on the US store. The product was published on 2026-09-22.","launch_price_usd":"List price 449.00 USD on the US store for all three variants. US sales tax is not included.","markets":"US store page. The German store page is the other source."}},{"url":"https://coros.com/de/buy/pace4pro","kind":"manufacturer_page","accessed":"2026-10-14","fields":["launch_price_eur"],"notes":{"launch_price_eur":"COROS Germany store lists 449.00 EUR for all three variants. EUR prices include VAT. This is the current list price three weeks after launch. BikeRadar's launch report gives the same 449 EUR."}},{"url":"https://support.coros.com/hc/en-us/articles/53610991583508-Set-Up-Your-COROS-PACE-4-Pro","kind":"manual","accessed":"2026-10-14","fields":["manual_url","compatible_phone_os","voice_assistants","led_flashlight","in_the_box","charger_in_box","charging_method","gesture_controls","button_count","hardware_buttons","crown","health_features","fitness_features","always_on_display","wifi","offline_music","speaker","spo2"],"notes":{"manual_url":"Set Up Your COROS PACE 4 Pro, the model setup and operating guide, last edited 2026-09-20.","compatible_phone_os":"Download the COROS app from the iOS or Google Play store.","voice_assistants":"Holding the Action button launches Voice Control for commands such as start a run or create a reminder. The list names the watch's own voice commands, not a third-party assistant.","led_flashlight":"The Flashlight tool lights the screen white. It is not a dedicated hardware LED.","in_the_box":"What's In the Box: COROS PACE 4 Pro GPS Watch and COROS A2 Charging Adapter. The buy page adds that a USB-C charging cable is not included. The strap is not named in the list.","charger_in_box":"The A2 is a watch-side charging adapter. The box has no mains or USB power adapter and no USB-C cable.","charging_method":"Metal pins on the A2 adapter plug into the charging port on the back of the watch and snap into place. The standard USB-C cable connects to the A2 and not to the watch.","gesture_controls":"Gesture Backlight turns the backlight on when the watch detects a wrist raise.","button_count":"Operating PACE 4 Pro: Digital Dial (top right), Back/Lap Button (bottom right) and Action Button (bottom left).","crown":"Scroll the dial to move the selection and press to confirm.","health_features":"Sleep and Wellness Features names sleep with a sleep score and stages, overnight HRV and menstrual cycle tracking. Daily Stress is a setting. The Oximeter control takes manual SpO2 readings.","fitness_features":"Navigation Settings include Turn by Turn and Back to Start, which retraces your steps via your GPS track.","always_on_display":"Display > Always On keeps the screen illuminated and dims it when the wrist is lowered.","wifi":"System > WiFi connects the watch to Wi-Fi to upload activities and download firmware.","offline_music":"Music: the PACE 4 Pro plays local MP3 files stored on the device.","speaker":"Sensor list ends with Speaker and Microphone with noise reduction. Volume settings apply to tones and alerts through the speaker.","spo2":"Sensor list: Pulse oximetry sensor (new SpO2 sensor)."}},{"url":"https://support.coros.com/hc/en-us/articles/23476623096980-Battery-Specifications","kind":"manufacturer_page","accessed":"2026-10-14","fields":["battery_life_claimed"],"notes":{"battery_life_claimed":"PACE 4 Pro table: Auto 40+ hours (30+ with Always On display), All Systems On / High 60 hours (45), Dual Frequency / Max 40 hours (30), daily use with Sleep Tracking + Daily Stress 21 days (7 days with Always On display). Actual consumption can be higher with backlight, navigation, weak signal and accessories. The Auto row has no always-on option in the schema, so only the 40 hour figure is stored."}},{"url":"https://support.coros.com/hc/en-us/articles/53639686483988-Charging-Your-PACE-4-Pro","kind":"manufacturer_page","accessed":"2026-10-14","fields":["charging_method","charging_notes"],"notes":{"charging_method":"The adapter pins fit into the charging port on the back of the watch and the adapter takes any standard USB-C cable.","charging_notes":"Use an LPS-compliant charger and official accessories. Do not use a battery pack with quick-charge capability. The Maintenance and Support article says to use only 5V/1A charging ports and no fast-charge cables or power banks."}},{"url":"https://support.coros.com/hc/en-us/articles/53824831742100-COROS-PACE-4-Pro-Release-Notes","kind":"manufacturer_page","accessed":"2026-10-14","fields":["os_latest","platform"],"notes":{"platform":"COROS publishes its own firmware versions through the COROS app and Wi-Fi updates. Tom's Guide says there is no app store. No Wear OS, watchOS or HarmonyOS.","os_latest":"Latest published PACE 4 Pro firmware V3.2008.0, September 26 2026. The FCC test sample ran software V3.1706.0, which is not an OS-at-launch claim."}},{"url":"https://support.coros.com/hc/en-us/articles/25514157012116-Safety-Alerts","kind":"manufacturer_page","accessed":"2026-10-14","fields":["emergency_sos"],"notes":{"emergency_sos":"The PACE 4 Pro spec page lists Safety Alerts under navigation features. This article, last edited 2026-06-23, lists the PACE 4 and PACE Pro but not the PACE 4 Pro, so it is used only for how the feature works. A manual Safety Alert sends location and a live tracking link by text to up to three preset contacts during outdoor activities, and it needs the paired phone with cell service. It does not contact local emergency services."}},{"url":"https://support.coros.com/hc/en-us/articles/51716258730772-How-to-Use-Live-Tracking","kind":"manufacturer_page","accessed":"2026-10-14","fields":["live_tracking"],"notes":{"live_tracking":"Live Tracking works for outdoor activities and needs the phone connected with the COROS app running. The article, last edited 2026-08-14, does not list the PACE 4 Pro. Tom's Guide says the PACE 4 Pro can share a live tracking link, so the value rests on that review plus how the feature works."}},{"url":"https://support.coros.com/hc/en-us/articles/360039803532-COROS-Warranty-Policy","kind":"manufacturer_page","accessed":"2026-10-14","fields":["warranty_years"],"notes":{"warranty_years":"COROS offers a 2-year warranty from the original activation date for watches that contain batteries. Straps, charging cables and non-battery accessories have 6 months. Local consumer law rights may differ. The COROS store metafield also says 2-year."}},{"url":"https://fccid.co/fcc/2BBGF-W337","kind":"regulatory","accessed":"2026-10-14","fields":["fcc_ids","model_numbers"],"notes":{"fcc_ids":"FCC ID 2BBGF-W337, model W337, COROS PACE 4 Pro, grant date Sep 29, 2026. Read on a public mirror of the FCC filing. The grant notes list BLE and 2.4GHz WLAN transmitters only.","model_numbers":"The filing identifies the hardware model as W337."}},{"url":"https://fccid.co/api/files/s2/fccids/2BBGF-W337/files/c1951110_SAR_Test_Report.pdf","kind":"regulatory","accessed":"2026-10-14","fields":["sar_limb_w_kg","wifi_standard","wifi_bands","cellular","satellite_connectivity"],"notes":{"sar_limb_w_kg":"FCC SAR test report DDT-RE26070744-2E04, issued 2026-09-21: highest reported extremity (10-g) SAR at 0 mm is 0.343 W/kg for 2.4 GHz Wi-Fi. Bluetooth extremity is 0.033 W/kg. Limit 4.0 W/kg. This is the US regime.","wifi_standard":"Radio specification lists IEEE 802.11b/g/n/ax with 802.11ax HE20, which is Wi-Fi 6.","wifi_bands":"All Wi-Fi modes are listed at 2412 MHz to 2462 MHz, so 2.4 GHz only.","satellite_connectivity":"No satellite radio or satellite messaging in the radio list or the COROS connectivity row.","cellular":"The report and the grant list only Bluetooth BR/EDR/LE and 2.4 GHz WLAN transmitters. The COROS connectivity row lists only Bluetooth and Wi-Fi."}},{"url":"https://www.tomsguide.com/wellness/smartwatches/coros-pace-4-pro-review","kind":"review_site","accessed":"2026-10-14","fields":["nfc_payments","third_party_apps","live_tracking","offline_music","announce_date","release_date"],"notes":{"nfc_payments":"The specs table lists NFC payments: No, and the smart features section says it does not offer NFC payments. NFC hardware is not ruled out, so the NFC field is not stored.","third_party_apps":"The smart features section says there is no app store. Syncing data to Strava or TrainingPeaks does not install third-party apps on the watch.","live_tracking":"During activities you can share a live tracking link and send SOS alerts.","offline_music":"You can store music on the PACE 4 Pro, but it only supports MP3 files and cannot link to streaming services.","announce_date":"The review says the PACE 4 Pro launched on 22 September 2026.","release_date":"Launched 22 September 2026, $449 in the US. The COROS store product was published the same day."}},{"url":"https://www.t3.com/active/fitness-trackers/coros-pace-4-pro-review","kind":"review_site","accessed":"2026-10-14","fields":["case_material"],"notes":{"case_material":"The polymer case body feels a bit plasticky next to the titanium bezel and sapphire glass. This agrees with the maker's cover material and bezel material."}},{"url":"https://www.bikeradar.com/news/coros-pace-4-pro-smartwatch","kind":"press","accessed":"2026-10-14","fields":["ram_gb","launch_price_eur"],"notes":{"ram_gb":"Relays COROS: double the RAM size of the PACE 4 at 64MB. The same sentence says 64GB storage, which conflicts with the maker's 32GB spec and is not used. Stored as 0.064 GB, 64 MB at 1000 MB per GB.","launch_price_eur":"Launch report: 389 GBP / 449 USD / 449 EUR."}},{"url":"https://www.playbetter.com/products/coros-pace-4-pro-multisport-gps-smartwatch","kind":"retailer","accessed":"2026-10-14","fields":["battery_capacity_mah","ram_gb"],"notes":{"battery_capacity_mah":"PlayBetter spec list reads Battery 447mAh. It is the only source for the capacity. COROS does not publish it and no FCC exhibit or teardown states it. Nominal voltage is not given.","ram_gb":"Spec list reads RAM 64MB (2x PACE 4), in agreement with BikeRadar."}},{"url":"https://www.active.com/running/articles/coros-pace-4-pro-review","kind":"review_site","accessed":"2026-10-14","fields":["calls_on_watch"],"notes":{"calls_on_watch":"The built-in speaker and microphone enable a talk feature when paired with a phone. The COROS store copy says hands-free calls. The watch has no cellular radio, so calls go through the paired phone."}},{"url":"https://the5krunner.com/specs/coros/pace-4-pro/","kind":"spec_database","accessed":"2026-10-14","fields":["ant_plus"],"notes":{"ant_plus":"The5krunner says sensors connect over Bluetooth only. COROS also lists Bluetooth as the accessory connection, and Tom's Guide says external sensors connect via Bluetooth."}}],"fields_filled":90,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}