{"data":{"slug":"amazfit-active-2-round","type":"smartwatch","brand":"Amazfit","name":"Active 2 (Round)","aliases":["Active 2","A2433","A2437"],"release_date":"2025-01","url":"https://arkivo.dev/smartwatches/amazfit-active-2-round","specs":{"series":"Active","model_numbers":["A2433","A2437","W2437GL3N","W2437GL1N","ACTIVE2RBK-C0208005007","ACTIVE2RLE-C0208035001"],"gtins":null,"announce_date":"2025-01-06","status":null,"predecessor":null,"successor":null,"launch_price_usd":99.99,"launch_price_eur":null,"markets":["US","DE"],"colors":["Red Sport Silicone","Black Sport Silicone","Black Leather – 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photodiodes","ecg":null,"spo2":true,"skin_temperature":true,"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":true,"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","readiness_score","cycle_tracking"],"fitness_features":["auto_workout_detection","vo2_max","training_load","recovery_advice","pool_swim","open_water_swim","strength_rep_counting","interval_workouts","route_navigation","turn_by_turn_navigation","trackback"],"sport_profiles_count":164,"dive_modes":null,"external_sensor_types":["heart_rate_strap","power_meter","speed_cadence"],"fall_detection":null,"crash_detection":null,"emergency_sos":null,"emergency_siren_db":null,"live_tracking":null,"led_flashlight":null,"positioning":["GPS"],"dual_frequency_gnss":false,"offline_maps":true,"bluetooth":null,"bluetooth_version":"5.2","wifi":null,"wifi_standard":null,"wifi_bands":null,"cellular":null,"network_technologies":null,"bands_4g":null,"bands_5g":null,"nfc":null,"nfc_payments":null,"payment_services":null,"uwb":null,"satellite_connectivity":null,"ant_plus":null,"speaker":true,"microphone_count":null,"calls_on_watch":"phone_only","offline_music":false,"button_count":2,"hardware_buttons":["Upper 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with supplied strap","Magnetic charging base","Instruction manual"],"charger_in_box":false},"variants":[{"model_number":"W2437GL3N","markets":["US"],"colors":["Red Sport Silicone"],"case_sizes_mm":[44],"case_dimensions_mm":{"height_mm":43.9,"width_mm":43.9,"thickness_mm":9.9},"weight_g":29.5,"display_cover_material":"other_glass","display_cover":"Tempered glass with anti-fingerprint coating","band_material":"silicone","band_width_mm":20,"band_sizes":[{"wrist_min_mm":135,"wrist_max_mm":195}],"battery_capacity_mah":270,"charge_time_0_100_min":120,"launch_price_usd":99.99,"in_the_box":["Smartwatch with supplied strap","Magnetic charging base","Instruction manual"]},{"model_number":"W2437GL1N","markets":["US"],"colors":["Black Leather – Premium"],"case_sizes_mm":[44],"case_dimensions_mm":{"height_mm":43.9,"width_mm":43.9,"thickness_mm":9.9},"weight_g":31.65,"display_cover_material":"sapphire","display_cover":"Sapphire glass","band_material":"leather","band_width_mm":20,"band_sizes":[{"wrist_min_mm":150,"wrist_max_mm":210}],"battery_capacity_mah":270,"charge_time_0_100_min":120,"launch_price_usd":129.99,"in_the_box":["Smartwatch with supplied strap","Magnetic charging base","Instruction manual","Additional red silicone strap"]},{"model_number":"ACTIVE2RBK-C0208005007","markets":["DE"],"colors":["Black Sport Silicone"],"case_sizes_mm":[44],"case_dimensions_mm":{"height_mm":43.9,"width_mm":43.9,"thickness_mm":9.9},"weight_g":29.5,"display_cover_material":"other_glass","display_cover":"Tempered glass with anti-fingerprint coating","band_material":"silicone","band_width_mm":20,"band_sizes":[{"wrist_min_mm":135,"wrist_max_mm":195}],"battery_capacity_mah":270,"charge_time_0_100_min":120},{"model_number":"ACTIVE2RLE-C0208035001","markets":["DE"],"colors":["Black Leather – Premium"],"case_sizes_mm":[44],"case_dimensions_mm":{"height_mm":43.9,"width_mm":43.9,"thickness_mm":9.9},"weight_g":31.65,"display_cover_material":"sapphire","display_cover":"Sapphire glass","band_material":"leather","band_width_mm":20,"band_sizes":[{"wrist_min_mm":150,"wrist_max_mm":210}],"battery_capacity_mah":270,"charge_time_0_100_min":120}],"sources":[{"url":"https://us.amazfit.com/products/active-2-round","kind":"manufacturer_page","accessed":"2026-10-05","fields":["series","segment","manufacturer_url","case_sizes_mm","case_shape","case_material","case_material_name","case_dimensions_mm","weight_g","water_resistance_atm","water_resistance_standard","display_technology","display_technology_name","screen_size_in","resolution","pixel_density_ppi","brightness_peak_nits","touchscreen","display_cover_material","display_cover","compatible_phone_os","phone_os_requirement","third_party_apps","voice_assistants","heart_rate_sensor","spo2","skin_temperature","accelerometer","gyroscope","barometer","compass","ambient_light_sensor","health_features","sport_profiles_count","external_sensor_types","positioning","offline_maps","bluetooth_version","speaker","calls_on_watch","button_count","battery_capacity_mah","charging_method","charge_time_0_100_min","battery_life_claimed","band_material","band_width_mm","quick_release","band_sizes","colors","in_the_box","charger_in_box"],"notes":{"case_sizes_mm":"Product overview explicitly markets a 44 mm case. Physical dimensions are 43.9 mm and remain separate.","case_dimensions_mm":"Technical Specifications / Design explicitly excludes the heart-rate sensor base from the 9.9 mm thickness.","case_material":"Technical table describes a stainless-steel bezel and polymer middle frame. Mixed materials follow the actual published housing components, not launch shorthand that calls the entire body steel.","weight_g":"Technical table explicitly excludes the strap. Standard 29.5 g and Premium 31.65 g are repeated in their exact variant rows.","water_resistance_atm":"Technical table and note 5: 5 ATM, ISO 22810:2010, SGS report SHES241102180871. Static pressure is not a diving depth. Hot showers and saunas are excluded. Leather is unsuitable for swimming.","brightness_peak_nits":"Maker note 1: outdoor/automatic brightness claim, unavailable below 30 percent battery. The 2,000 nit limit requires automatic brightness and depends on the environment. No full-screen sustained value is inferred.","display_cover":"Standard tempered glass and Premium sapphire are explicitly distinguished in the technical table and exact supplied-strap variants.","battery_capacity_mah":"Technical table explicitly states 270 mAh rated capacity. No typical capacity is substituted.","battery_life_claimed":"Maker note 2: normal use includes optical HR every 10 minutes, sleep tracking, five daily SpO2 readings, 150 daily notifications, 30 minutes weekly calls and three weekly 30-minute GPS workouts. Heavy use changes HR to once per minute, adds stress and eight hours of sleep-breathing monitoring, 60 minutes weekly calls and longer screen use. Saver disables health functions and GPS. Continuous GPS claim has no explicit multi-band or music condition. Day claims convert exactly to hours. No AOD runtime is inferred.","charge_time_0_100_min":"Technical table and FAQ explicitly approximate two hours from empty to full. Adapter details are not given. This is a maker claim, not a timed measurement.","charging_method":"Quick guide printed page 4 explicitly describes metal charging contacts mating with the magnetic base. The USB-C socket is on the base, not the watch.","health_features":"Technical health table explicitly supports all retained functions. HRV is sleep HRV. Readiness is a daily wellness score. Note 3 requires enabling periodic HR/SpO2/stress and setting alert thresholds, with movement and fit restrictions. These are wellness functions. Sleep-breathing quality is not clinical sleep-apnea notification.","skin_temperature":"Technical Health Features explicitly lists 24-hour Skin temperature. This is not inferred from a generic temperature sensor.","sport_profiles_count":"Technical table explicitly says 164. The complete matching 13-category list contains 164 comma-separated profile names. Neither the 160+ headline nor 25 recognized strength movements substitutes for this profile count.","external_sensor_types":"Technical table and note 18 explicitly support BLE heart-rate belts, running/cycling power meters, cycling speed and cadence sensors. External power-meter compatibility is not built-in running-power proof.","positioning":"Manual identifies GPS positioning. Maker says five satellite systems but does not name the other four, so they are not guessed.","offline_maps":"Maker note 6 explicitly supports imported OSM files stored on the watch. The matching local map and an imported route are needed for navigation, with supported outdoor sports and valid positioning. A point cannot be selected directly on the map for navigation.","voice_assistants":"Technical Lifestyle table and note 12: Zepp Flow in supported countries and regions, with eight named supported languages. Replies require a connected Android 7 or later phone. This is an assistant capability, not an unrestricted standalone service.","third_party_apps":"Maker app section and full manual printed page 36 explicitly support installed Mini Apps from the Zepp app store.","in_the_box":"Technical packing list includes watch with standard strap, charging base and instruction manual. USB-C cable and power adapter are absent. The original launch additionally supplies a red silicone strap with the US Premium package, recorded only in that variant row.","colors":"Three marketed combinations are stated in the technical table. Exact current US and German retail SKUs prove the represented sold configurations."}},{"url":"https://support.amazfit.com/en/amazfit_active_2%28round%29/imgs/electronic_manual.pdf","kind":"manual","accessed":"2026-10-05","fields":["operating_temperature_c","warranty_years","hardware_buttons","model_numbers","charging_method"],"notes":{"operating_temperature_c":"Printed page 6 Basic Parameters explicitly gives working range 0 to 45 Celsius, distinct from storage or charging input.","warranty_years":"Printed page 11 limited manufacturer warranty explicitly covers one year from original purchase, with additional statutory consumer rights unaffected.","hardware_buttons":"Printed page 2 complete About the Watch diagram names Upper and Lower buttons. Neither is described as a rotating crown.","model_numbers":"Printed page 6 identifies NFC model A2433 and non-NFC A2437. Exact retail SKU mappings come from current regional product pages. Shared NFC/payment flags are omitted because they are not variant-enabled and cannot safely describe both editions.","charging_method":"Printed page 4 explicitly identifies metal charging contacts fitting closely to the charging base."}},{"url":"https://support.amazfit.com/us/amazfit_active_2(round)/files/user-manual.pdf.pdf","kind":"manual","accessed":"2026-10-05","fields":["manual_url","always_on_display","fitness_features","health_features","third_party_apps"],"notes":{"manual_url":"Original complete Active 2 (Round) user guide, 38 pages. It is not the Square manual. A map-download instruction incorrectly refers to Wi-Fi although exact quick parameters and maker connectivity table do not publish Wi-Fi. Wi-Fi standards/bands are omitted rather than inherited from this instruction.","always_on_display":"Printed page 4 Always On Display explicitly enables standby time and watchface information.","fitness_features":"Printed pages 12-15 define interval/rest/repeat training, route import, turn prompts and return along the recorded track. Pages 17/18 explicitly define pool/open-water SWOLF and stroke recognition. Page 19 automatically records eight recognized workouts. Pages 20-23 specify VO2 max, EPOC load and recovery. VO2 max requires qualifying running with HR at least 75 percent of maximum. The maker launch explicitly proves automatic strength rep/set counts.","health_features":"Printed pages 25-28 explain daily readiness from HR, stress, sleep, HRV and temperature, and explicit sleep stages including REM. No clinical apnea claim is inferred.","third_party_apps":"Printed page 36 Mini App installation and uninstallation uses the Zepp device app store."}},{"url":"https://us.amazfit.com/blogs/news/amazfit-announces-the-active-2-the-ultimate-everyday-smartwatch-for-active-and-healthy-living","kind":"press_release","accessed":"2026-10-05","fields":["announce_date","launch_price_usd","segment","in_the_box","variants","heart_rate_sensor","fitness_features"],"notes":{"announce_date":"Opening actual announcement January 6, 2025. Its preorder and planned global February availability are not used as actual retail.","launch_price_usd":"US launch explicitly prices Standard 99.99 USD and Premium 129.99 USD. These US suggested retail prices are distinct from current store prices. Exact standard and premium US rows repeat their launch prices. German rows remain unknown in this price column.","in_the_box":"Launch design paragraph explicitly includes an additional red silicone strap in the Premium package. Retained only for the represented US Premium configuration.","heart_rate_sensor":"Cutting-Edge Technology explicitly states two LEDs and five photodiodes for BioTracker 6.0.","fitness_features":"Fitness section explicitly counts reps, sets and rest time during recognized strength exercises."}},{"url":"https://gadgetsandwearables.com/2025/01/24/amazfit-active-2-amazon/","kind":"press","accessed":"2026-10-05","fields":["release_date","offline_music"],"notes":{"release_date":"Dated January 24, 2025. Opening explicitly says Standard is now available on Amazon US and was previously available on the Zepp website. Premium is still expected later. January is actual Standard retail, not the January 6 preorder date.","offline_music":"Exact model smart-features paragraph explicitly states it has no offline music storage. Full manual only provides phone music controls, not local music transfer or playback."}},{"url":"https://docs.zepp.com/docs/reference/related-resources/device-list/","kind":"manufacturer_page","accessed":"2026-10-05","fields":["platform","os_latest"],"notes":{"platform":"Current maker developer table identifies exact Active 2 (Round) under Devices with Zepp OS, rather than Non-Zepp OS Devices. Zepp OS is a proprietary wearable platform.","os_latest":"Exact Active 2 (Round) row explicitly names latest Zepp OS version 5.0. API level 4.2 is separate and is not an OS version. No launch version or upgrade-duration promise is inferred."}},{"url":"https://us.amazfit.com/products/active-2-round","kind":"manufacturer_page","accessed":"2026-10-05","fields":["model_numbers","markets","variants"],"notes":{"variants":"Current page native ProductGroup JSON names exact US retail SKUs W2437GL3N for Red Sport Silicone and W2437GL1N for Black Leather Premium. Numeric mpn fields resemble barcodes but are not labelled GTIN, so GTINs are not inferred."}},{"url":"https://de.amazfit.com/products/amazfit-active-2","kind":"manufacturer_page","accessed":"2026-10-05","fields":["model_numbers","markets","variants"],"notes":{"variants":"Current exact German native Product offers identify ACTIVE2RBK-C0208005007 for Black Sport Silicone and ACTIVE2RLE-C0208035001 for Black Leather Premium NFC. Technical specs agree on case/display/weight/band differences. Optional NFC/payment fields are omitted across the family because a shared scalar would be unsafe. Current 99.90/129.90 EUR store prices are not launch evidence and are omitted."}},{"url":"https://www.techadvisor.com/article/2949577/amazfit-active-2-review.html","kind":"review_site","accessed":"2026-10-05","fields":["crown"],"notes":{"crown":"Design & Build explicitly says there is no rotating crown and scrolling uses the touchscreen. Round version, not the separately mentioned Square."}},{"url":"https://www.notebookcheck.net/Amazfit-Active-2-smartwatch-review-Price-performance-king.1084077.0.html","kind":"measurement","accessed":"2026-10-05","fields":["dual_frequency_gnss","measured_charge_time_min"],"notes":{"dual_frequency_gnss":"GPS and navigation explicitly says all supported satellite systems use single band. No individual unnamed constellation or band number is inferred.","measured_charge_time_min":"Battery life / charging: exact Standard Round review unit, with black silicone strap and mineral glass, took approximately 90 minutes for a full charge on an Anker 335 adapter. The same paragraph explicitly begins the charge trace at 0 percent. Review reports Zepp OS 4.5 and pairing to Galaxy S24 Ultra with Android 15. Firmware minor, ambient temperature and charger port are not separately published. This differs from the maker approximate 120 minutes because adapter/test conditions are different and the maker does not name an adapter."}}],"fields_filled":70,"updated":"2026-10-05"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}