{"data":{"slug":"garmin-forerunner-255","type":"smartwatch","brand":"Garmin","name":"Forerunner 255","aliases":["FR255","Forerunner 255 46mm"],"release_date":"2022-06","url":"https://arkivo.dev/smartwatches/garmin-forerunner-255","specs":{"series":"Forerunner","model_numbers":["010-02641-01"],"gtins":null,"announce_date":"2022-06-01","status":null,"predecessor":null,"successor":"garmin-forerunner-265","launch_price_usd":349.99,"launch_price_eur":349.99,"markets":["US","DE"],"colors":["Tidal Blue"],"manufacturer_url":"https://www.garmin.com/en-US/p/780139/pn/010-02641-01","spec_sheet_url":"https://www.garmin.com/en-US/p/780139/pn/010-02641-01","manual_url":"https://www8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdf","eprel_registration_number":null,"warranty_years":1,"segment":"sport","os_updates_years":null,"security_updates_until":null,"case_sizes_mm":[46],"case_shape":"round","case_material":"fibre_reinforced_polymer","case_material_name":"Fiber-reinforced polymer","back_material":null,"case_dimensions_mm":{"height_mm":45.6,"width_mm":45.6,"thickness_mm":12.9},"weight_g":null,"weight_with_strap_g":null,"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":60},"display_technology":"mip","display_technology_name":"Sunlight-visible, transflective memory-in-pixel (MIP)","screen_size_in":1.3,"resolution":{"width_px":260,"height_px":260},"pixel_density_ppi":null,"display_area_mm2":null,"touchscreen":false,"refresh_rate_max_hz":null,"refresh_rate_min_hz":null,"brightness_peak_nits":null,"brightness_min_nits":null,"always_on_display":null,"display_cover_material":"gorilla_glass","display_cover":"Corning Gorilla Glass 3","platform":"proprietary","os_at_launch":null,"os_skin":null,"os_latest":null,"compatible_phone_os":["ios","android"],"phone_os_requirement":null,"third_party_apps":true,"voice_assistants":null,"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":null,"storage_gb":[4],"heart_rate_sensor":"Garmin Elevate wrist heart rate monitor","ecg":false,"spo2":true,"skin_temperature":false,"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":false,"depth_gauge":null,"depth_gauge_max_m":null,"water_temperature_sensor":null,"health_features":["continuous_heart_rate","heart_rate_alerts","blood_oxygen_app","hrv","sleep_tracking","sleep_stages","stress_tracking","cycle_tracking"],"fitness_features":["vo2_max","training_load","recovery_advice","running_dynamics","running_power","pool_swim","open_water_swim","strength_rep_counting","interval_workouts","route_navigation","trackback"],"sport_profiles_count":null,"dive_modes":null,"external_sensor_types":["heart_rate_strap","power_meter","speed_cadence","foot_pod","smart_trainer"],"fall_detection":false,"crash_detection":null,"emergency_sos":true,"emergency_siren_db":null,"live_tracking":true,"led_flashlight":false,"positioning":["GPS","GLONASS","Galileo","QZSS","BeiDou"],"dual_frequency_gnss":true,"offline_maps":false,"bluetooth":true,"bluetooth_version":null,"wifi":false,"wifi_standard":null,"wifi_bands":null,"cellular":false,"network_technologies":null,"bands_4g":null,"bands_5g":null,"nfc":true,"nfc_payments":true,"payment_services":["Garmin Pay"],"uwb":false,"satellite_connectivity":null,"ant_plus":true,"speaker":false,"microphone_count":0,"calls_on_watch":"none","offline_music":false,"button_count":5,"hardware_buttons":["LIGHT","UP","DOWN","BACK","START/STOP"],"crown":"none","rotating_bezel":"none","gesture_controls":["Raise and turn your arm to turn on the backlight"],"battery_capacity_mah":null,"battery_life_claimed":[{"mode":"smartwatch","with_solar":false,"hours":336},{"mode":"gps","with_solar":false,"hours":30},{"mode":"gps_all_systems","with_solar":false,"hours":25},{"mode":"gps_dual_frequency","with_solar":false,"hours":16}],"battery_life_smartwatch_claimed_h":336,"battery_life_always_on_claimed_h":null,"battery_life_gps_claimed_h":30,"solar_charging":false,"charging_method":"proprietary_plug","charging_notes":null,"charging_max_w":null,"fast_charging":null,"quick_charge":null,"charge_time_0_80_min":null,"charge_time_0_100_min":120,"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":"Industry standard 22 mm quick release bands","band_material":"silicone","band_name":null,"band_sizes":[{"size_label":null,"wrist_min_mm":130,"wrist_max_mm":205}],"fcc_ids":null,"sar_limb_w_kg":null,"sar_eu_limb_w_kg":null,"other_certifications":["ANT+ certified"],"in_the_box":["Forerunner 255","Charge/data cable","Documentation"],"charger_in_box":false},"variants":[],"sources":[{"url":"https://www.garmin.com/en-US/p/780139/pn/010-02641-01","kind":"manufacturer_page","accessed":"2026-10-11","fields":["series","segment","model_numbers","colors","manufacturer_url","case_sizes_mm","case_shape","case_dimensions_mm","water_resistance_atm","display_technology","display_technology_name","screen_size_in","resolution","display_cover_material","display_cover","platform","compatible_phone_os","third_party_apps","storage_gb","heart_rate_sensor","spo2","accelerometer","gyroscope","barometer","compass","health_features","fitness_features","external_sensor_types","positioning","dual_frequency_gnss","bluetooth","cellular","ant_plus","nfc","nfc_payments","payment_services","battery_life_claimed","charging_method","band_material","band_width_mm","quick_release","band_compatibility","band_sizes","in_the_box","charger_in_box","fall_detection","emergency_sos","live_tracking","offline_maps","calls_on_watch","spec_sheet_url"],"notes":{"series":"Product page title is Forerunner 255, running smartwatch, 46 mm.","segment":"Garmin presents it as a running smartwatch.","model_numbers":"US page for the 46 mm watch without music lists part number 010-02641-01 (Tidal Blue, $349.99). The Music toggle on the same page links the music watch to 010-02641-20, so music watches are other models. 255S is the 41 mm size, SKU 010-02641-02.","colors":"US store lists Tidal Blue for this model. Other regional colours exist but are not listed on this page.","case_dimensions_mm":"Specs: Physical size 45.6 x 45.6 x 12.9 mm. Not stated whether the heart rate sensor bump is included.","case_shape":"Specs describe the display as a diameter and the pictured case is round.","water_resistance_atm":"Specs: Water rating 5 ATM.","display_technology":"Specs: Display type sunlight-visible, transflective memory-in-pixel (MIP).","screen_size_in":"Specs: 1.3 inch (33 mm) diameter.","resolution":"Specs: 260 x 260 pixels.","display_cover":"Specs: Lens material Corning Gorilla Glass 3. Bezel material is fiber-reinforced polymer. Case material is not listed, so case_material is not stored.","storage_gb":"Specs: Memory/History 4 GB. The manual lists up to 4 GB of music storage for Music models only.","platform":"Garmin watch software with downloadable Connect IQ watch faces, data fields and apps.","third_party_apps":"Specs list Connect IQ downloadable watch faces, data fields and apps and an on-device Connect IQ store.","spo2":"Specs: Pulse Ox blood oxygen, spot-check and optional all-day acclimation and in sleep. Not available in all countries.","health_features":"Specs list heart rate every second, high and low abnormal heart rate alerts, Pulse Ox, HRV status, advanced sleep, all-day stress and women's health in Garmin Connect. Sleep stages are in the manual.","fitness_features":"Specs list VO2 Max (run), training load, recovery time, running dynamics, running power, pool and open-water swim metrics, automatic rep counting, interval training, course guidance and TracBack. Running dynamics need a pod or HRM-Pro. No golf course or ClimbPro entry.","external_sensor_types":"Specs list heart rate from external HRM, power meter compatible, speed and cadence sensor support, foot pod capable and smart trainer control.","positioning":"Specs list GPS, GLONASS, Galileo, QZSS and BeiDou. Multi-band GPS is listed. Signal bands are not named.","dual_frequency_gnss":"Specs list Multi-band GPS. Battery table calls it All-Systems GNSS plus Multi-Band.","cellular":"Specs list Connectivity as Bluetooth and ANT+ only. No Wi-Fi and no cellular.","offline_maps":"No map entry in the specs. Only breadcrumb trail, courses and TracBack are listed, which are not offline maps.","nfc":"Garmin Pay contactless payments are listed. NFC itself is not named in the specs.","nfc_payments":"Garmin Pay is listed.","battery_life_claimed":"Smartwatch mode up to 14 days (336 h). GPS-only GNSS up to 30 h. All-Systems GNSS up to 25 h. All-Systems plus Multi-Band up to 16 h. Manual footnote: smartwatch mode includes activity tracking, phone notifications and wrist heart rate.","charging_method":"Specs: Garmin proprietary plug charger.","band_material":"Specs: Strap material silicone.","band_width_mm":"Specs: quick release bands, 22 mm, industry standard.","band_sizes":"Specs: fits wrists with a circumference of 130-205 mm. This is the overall range for the watch with its supplied silicone strap.","in_the_box":"In the Box tab: Forerunner 255, charge/data cable, documentation.","charger_in_box":"Box lists a charge/data cable and no power adapter.","fall_detection":"Specs list only incident detection during select activities, which is limited to certain outdoor activities. Not counted as general fall detection.","emergency_sos":"Specs list Assistance. The manual says it sends a message with name, LiveTrack link and GPS location to emergency contacts through a paired phone with data. It does not call emergency services.","live_tracking":"Specs list live event sharing (Android only). The manual lists LiveTrack.","calls_on_watch":"Specs list text response and reject phone call with text only. No voice call, speaker or microphone entry and no cellular. No voice calls on the watch.","manufacturer_url":"US store page for SKU 010-02641-01.","spec_sheet_url":"The specs tab of the US product page holds the full specification list for the 46 mm watch."}},{"url":"https://www8.garmin.com/manuals/webhelp/GUID-676967A0-1B23-4384-9BC9-76F3D643F1C8/EN-US/Forerunner_255_OM_EN-US.pdf","kind":"manual","accessed":"2026-10-11","fields":["manual_url","operating_temperature_c","touchscreen","wifi","offline_music","button_count","hardware_buttons","crown","rotating_bezel","health_features","fitness_features","emergency_sos","live_tracking","fall_detection","storage_gb","charge_time_0_100_min","led_flashlight","gesture_controls","other_certifications","skin_temperature"],"notes":{"operating_temperature_c":"Specifications page 101: operating temperature -20 to 60 C. Charging range 0 to 45 C is excluded.","touchscreen":"The manual describes control only with the LIGHT, UP, DOWN, BACK and START/STOP buttons and never mentions touch input.","wifi":"Status icons: Wi-Fi technology status for Forerunner music watches only. The spec table lists no Wi-Fi for this model.","offline_music":"Specifications page 101 lists music media storage for Forerunner music watches (Forerunner 255 Music). This model is the non-music watch.","button_count":"Overview, page 2: LIGHT, UP, DOWN, BACK and START/STOP.","hardware_buttons":"Overview page 2. START and STOP share one button.","crown":"Overview shows five buttons and no crown.","rotating_bezel":"Overview shows five buttons and no rotating bezel.","health_features":"Sleep statistics include total hours of sleep, sleep stages and sleep score (page 42 area).","fitness_features":"Page 62: running power can be measured with a compatible running dynamics accessory or the watch sensors. Page 63: Running Dynamics Pod records running dynamics.","emergency_sos":"Safety and Tracking, page 84: Assistance sends a message with name, LiveTrack link and GPS location to emergency contacts. Paired phone with data plan required.","live_tracking":"Safety and Tracking: LiveTrack lets friends and family follow activities in real time.","fall_detection":"Page 83: incident detection is a supplemental feature available only for certain outdoor activities.","storage_gb":"Music storage up to 4 GB applies to Music models.","charge_time_0_100_min":"Tips for charging: charging a fully depleted battery takes up to two hours, from a Garmin approved AC adapter or a computer USB port. Stored as a nominal claim of 120 minutes with the up-to qualifier.","led_flashlight":"Controls menu: Flashlight turns on the screen to use the watch as a flashlight. A lit display is not a dedicated LED.","gesture_controls":"Backlight settings: Gesture turns on the backlight by raising and turning your arm to look at your wrist.","other_certifications":"Front matter: this product is ANT+ certified.","skin_temperature":"The manual describes an internal temperature sensor whose reading is affected by body temperature and offers an external tempe sensor for ambient temperature. No skin temperature function is described."}},{"url":"https://www.garmin.com/en-US/newsroom/press-release/sports-fitness/garmin-celebrates-global-running-day-with-the-introduction-of-the-forerunner-255-series/","kind":"press_release","accessed":"2026-10-11","fields":["announce_date","release_date","launch_price_usd","colors","markets"],"notes":{"announce_date":"Garmin release dated June 1, 2022.","release_date":"Release says Forerunner 255 and 255S are available now. Date of that release is June 1, 2022.","launch_price_usd":"Suggested retail price $349.99 for Forerunner 255 and 255S. Music models are $399.99.","colors":"Release names tidal blue as a new colour.","markets":"US release with US dollar suggested retail prices."}},{"url":"https://www.nextpit.de/news/garmin-forerunner-255-und-955-vorgestellt-touchscreen-mehr-akku","kind":"press","accessed":"2026-10-11","fields":["launch_price_eur","markets"],"notes":{"launch_price_eur":"nextpit.de, 1 June 2022: the Forerunner 255 costs 349,99 EUR in every size, the Music edition 50 EUR more. German price incl. VAT.","markets":"German launch pricing in euros. Documented subset together with the US release."}},{"url":"https://www.garmin.com/en-US/legal/consumer-limited-warranty/","kind":"manufacturer_page","accessed":"2026-10-11","fields":["warranty_years"],"notes":{"warranty_years":"Garmin consumer limited warranty, US: non-aviation products are free from defects in materials or workmanship for one year from the date of purchase."}},{"url":"https://www.androidcentral.com/wearables/garmin-forerunner-255-review","kind":"review_site","accessed":"2026-10-11","fields":["case_material","case_material_name"],"notes":{"case_material":"Review spec box: materials fiber-reinforced polymer. The maker lists only the bezel as fiber-reinforced polymer and no other case material.","case_material_name":"Review spec box wording."}},{"url":"https://gadgetsandwearables.com/technical-specs/garmin-forerunner-255/","kind":"spec_database","accessed":"2026-10-11","fields":["case_material","case_material_name","ecg","skin_temperature","ambient_light_sensor","speaker","microphone_count","uwb","led_flashlight"],"notes":{"case_material":"Spec table: fiber-reinforced polymer bezel and case, silicone strap.","case_material_name":"Spec table wording.","ecg":"Spec table: electrical heart rate No, ECG No. The Garmin product page lists no ECG sensor or app.","skin_temperature":"Spec table: skin temperature No. The Garmin page lists only a thermometer.","ambient_light_sensor":"Spec table: ambient light sensor No. The Garmin sensor list has none.","speaker":"Spec table: speakers No. Garmin lists no voice calls, speaker or music playback for this non-music model.","microphone_count":"Spec table: microphone No. Garmin lists no voice calls or microphone for this model.","uwb":"Spec table: UWB No. Garmin lists Bluetooth and ANT+ only.","led_flashlight":"Spec table: LED flashlight No, matching the manual."}},{"url":"https://www.dcrainmaker.com/2023/03/garmin-forerunner-review-amoled.html","kind":"review_site","accessed":"2026-10-11","fields":["successor"],"notes":{"successor":"Review: the Forerunner 265 series at first glance seems like an AMOLED version of the Forerunner 255, with several hardware differences. It follows the 255 in the Forerunner line."}},{"url":"https://www.dcrainmaker.com/2022/06/garmin-forerunner-multisport.html","kind":"review_site","accessed":"2026-10-11","fields":["solar_charging"],"notes":{"solar_charging":"Review covers the Forerunner 255, 255S, 255 Music and 255S Music with no solar model. Solar is introduced in this launch only on the Forerunner 955 Solar."}},{"url":"https://www.garmin.com/nl-NL/blog/?p=5394","kind":"manufacturer_page","accessed":"2026-10-23","fields":["successor"],"notes":{"successor":"Garmin's Dutch blog says the Forerunner 265 is the successor of the Forerunner 255."}}],"fields_filled":81,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}