{"data":{"slug":"amazfit-active-2-square","type":"smartwatch","brand":"Amazfit","name":"Active 2 (Square)","aliases":["Amazfit Active 2 Square","Active 2 Square","A2440","A2434"],"release_date":"2025-06","url":"https://arkivo.dev/smartwatches/amazfit-active-2-square","specs":{"series":"Active","model_numbers":["W2440GL3N","ACITVESBK-C0077035004","A2440","A2434","W2434GL2N"],"gtins":["850071618334","6972596108818"],"announce_date":"2025-01","status":"available","predecessor":null,"successor":null,"launch_price_usd":149.99,"launch_price_eur":149.9,"markets":["US","EU"],"colors":["Black (with additional red strap)","Black Leather"],"manufacturer_url":"https://us.amazfit.com/products/active-2-square","spec_sheet_url":"https://us.amazfit.com/products/active-2-square","manual_url":"https://support.amazfit.com/en/amazfit_active_2%28square%29/files/user-manual.pdf.pdf","eprel_registration_number":null,"warranty_years":1,"segment":"smartwatch","os_updates_years":null,"security_updates_until":null,"case_sizes_mm":[36.9],"case_shape":"rectangular","case_material":"mixed","case_material_name":"Stainless steel bezel, Fiber-reinforced polymer case","back_material":null,"case_dimensions_mm":{"height_mm":43.32,"width_mm":36.9,"thickness_mm":9},"weight_g":31.4,"weight_with_strap_g":null,"water_resistance_atm":5,"water_resistance_standard":"ISO 22810:2010","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":0,"max_c":45},"display_technology":"oled","display_technology_name":"AMOLED","screen_size_in":1.75,"resolution":{"width_px":390,"height_px":450},"pixel_density_ppi":341,"display_area_mm2":null,"touchscreen":true,"refresh_rate_max_hz":null,"refresh_rate_min_hz":null,"brightness_peak_nits":2000,"brightness_min_nits":null,"always_on_display":true,"display_cover_material":"sapphire","display_cover":"Sapphire glass","platform":"proprietary","os_at_launch":"Zepp OS 5.0","os_skin":null,"os_latest":"Zepp OS 5.0","compatible_phone_os":["android","ios"],"phone_os_requirement":"Android 7.0 and above, iOS 15.0 and above","third_party_apps":true,"voice_assistants":["Zepp Flow"],"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":null,"heart_rate_sensor":"BioTracker 6.0 PPG biosensor (dual LED, 5PD)","ecg":false,"spo2":true,"skin_temperature":true,"blood_pressure":"none","bioimpedance":false,"eda_sensor":false,"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","ski_resort_maps"],"sport_profiles_count":null,"dive_modes":null,"external_sensor_types":["heart_rate_strap","power_meter","speed_cadence"],"fall_detection":false,"crash_detection":null,"emergency_sos":false,"emergency_siren_db":null,"live_tracking":null,"led_flashlight":false,"positioning":["GPS","GLONASS","Galileo","BeiDou","QZSS"],"dual_frequency_gnss":null,"offline_maps":true,"bluetooth":true,"bluetooth_version":"5.2","wifi":null,"wifi_standard":null,"wifi_bands":null,"cellular":false,"network_technologies":null,"bands_4g":null,"bands_5g":null,"nfc":true,"nfc_payments":true,"payment_services":["Zepp Pay"],"uwb":false,"satellite_connectivity":null,"ant_plus":false,"speaker":true,"microphone_count":null,"calls_on_watch":"phone_only","offline_music":false,"button_count":2,"hardware_buttons":["Upper button","Lower button"],"crown":"none","rotating_bezel":null,"gesture_controls":["Cover the screen to turn it off"],"battery_capacity_mah":260,"battery_life_claimed":[{"mode":"smartwatch","with_solar":false,"hours":240},{"mode":"low_power","with_solar":false,"hours":456},{"mode":"heavy_use","with_solar":false,"hours":120},{"mode":"gps","with_solar":false,"hours":21}],"battery_life_smartwatch_claimed_h":240,"battery_life_always_on_claimed_h":null,"battery_life_gps_claimed_h":21,"solar_charging":null,"charging_method":"magnetic_pins","charging_notes":"Charges on the supplied magnetic charging base. A USB-C cable is not included. The manual recommends a power adapter with a charging current of 1 A or above.","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":20,"quick_release":true,"band_compatibility":"20 mm quick release","band_material":"leather","band_name":null,"band_sizes":[{"size_label":"Leather strap","wrist_min_mm":150,"wrist_max_mm":210},{"size_label":"Silicone strap","wrist_min_mm":135,"wrist_max_mm":195}],"fcc_ids":null,"sar_limb_w_kg":null,"sar_eu_limb_w_kg":null,"other_certifications":null,"in_the_box":["Smartwatch (including standard strap and additional red sport silicone strap)","Magnetic charging base (no USB Type-C cable)","Instruction manual"],"charger_in_box":false},"variants":[{"model_number":"W2440GL3N","gtin":"850071618334","markets":["US"],"colors":["Black (with additional red strap)"],"launch_price_usd":149.99,"in_the_box":["Smartwatch (including standard strap and additional red sport silicone strap)","Magnetic charging base (no USB Type-C cable)","Instruction manual"]},{"model_number":"ACITVESBK-C0077035004","gtin":"6972596108818","markets":["EU"],"colors":["Black Leather"],"launch_price_eur":149.9,"in_the_box":["Smartwatch (including standard strap)","Magnetic charging base (no USB Type-C cable)","Instruction manual"]}],"sources":[{"url":"https://us.amazfit.com/products/active-2-square","kind":"manufacturer_page","accessed":"2026-10-15","fields":["series","status","markets","manufacturer_url","spec_sheet_url","warranty_years","segment","case_sizes_mm","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","display_cover_material","display_cover","compatible_phone_os","phone_os_requirement","voice_assistants","heart_rate_sensor","spo2","skin_temperature","accelerometer","gyroscope","barometer","ambient_light_sensor","health_features","fitness_features","external_sensor_types","offline_maps","bluetooth","bluetooth_version","speaker","calls_on_watch","battery_capacity_mah","battery_life_claimed","charge_time_0_100_min","band_width_mm","band_material","band_sizes","in_the_box","charger_in_box","gtins","model_numbers","variants","colors","ant_plus"],"notes":{"series":"Listed in the Explore other Active models block","warranty_years":"1 year warranty, US store","segment":"Marketed as an everyday health and fitness smartwatch. The sport profile count is stated only as 160+","case_sizes_mm":"Compare block lists a 36.9mm case width. The square case has no diameter, so this is the case width","case_material_name":"Technical Specifications, Body Material","case_dimensions_mm":"Dimensions without heart rate base: 43.32 x 36.9 x 9 mm, read as height x width x thickness","weight_g":"Without strap","water_resistance_atm":"Footnote 4: 5 ATM per ISO 22810:2010, SGS report SHES250300481871. Suitable for splashes, snow, showering or swimming","water_resistance_standard":"Footnote 4","brightness_peak_nits":"Footnote 1: 2,000 nits is not supported if battery life is below 30 percent. Depending on the environment the watch can reach up to 2,000 nits with automatic brightness enabled","display_cover":"Spec row lists a sapphire cover. The page copy names scratch-resistant sapphire glass","phone_os_requirement":"Supported Devices: Android 7.0 and above, iOS 15.0 and above","heart_rate_sensor":"Sensors, Health: BioTracker 6.0 PPG biometric sensor. The launch release names a dual-LED and 5PD build","skin_temperature":"24H Monitoring lists skin temperature (thermometer)","health_features":"24H heart rate, blood oxygen and stress. Alerts for abnormally high and low heart rate and low blood oxygen. Sleep HRV and sleep stages. Daily readiness score. Menstrual cycle tracking. Not medical devices (footnote 2)","fitness_features":"Smart recognition of 8 sports movements. Strength training counts reps, sets and rest. Pool and open water swimming modes. Interval training on the watch. Downloadable maps with turn-by-turn directions. Ski resort maps. VO2 max, training load and recovery come from the manual","external_sensor_types":"Heart rate belt, running and cycling power meter, cycling speedometer and cadence meter. Footnote 17: BLE devices only","offline_maps":"Free downloadable maps from the Zepp App with turn-by-turn directions. Footnote 5: OSM map files imported to the watch","bluetooth_version":"Connection: Bluetooth 5.2, BLE","speaker":"Spec table: Mic and Speaker: Support","calls_on_watch":"FAQ: Bluetooth phone calls through the paired phone. No cellular model","battery_capacity_mah":"260 mAh (rated value)","battery_life_claimed":"Typical use 10 days (240 h), battery saver 19 days (456 h), heavy use 5 days (120 h), continuous GPS 21 h. Footnote 8: typical use is HR every 10 minutes, sleep monitoring, five daily SpO2 readings, 150 notifications a day and three 30-minute GPS workouts a week. Heavy use is HR every minute with stress and sleep-breathing monitoring and longer screen use. Battery saver turns off health monitoring and GPS. The maker does not state the GPS mode or satellite systems for the 21 h figure","charge_time_0_100_min":"Theoretical charging duration approx. 2 hours. The FAQ says about 2 hours from empty. Maker claim, no adapter named","band_width_mm":"Strap Width: 20mm","band_material":"Standard strap is leather. The US package adds a red sport silicone strap","band_sizes":"Min. and Max. Wrist Dimensions: leather 150-210 mm, silicone 135-195 mm","in_the_box":"Packing list, US package","charger_in_box":"Magnetic charging base without USB-C cable","gtins":"US barcode from the Shopify product feed: 850071618334","model_numbers":"US SKU W2440GL3N","variants":"US variant Black with additional red strap at $149.99","colors":"US store option Black (with additional red strap)","ant_plus":"Footnote 17: connection to peripheral devices only supports BLE devices"}},{"url":"https://eu.amazfit.com/products/active-2-square","kind":"manufacturer_page","accessed":"2026-10-15","fields":["nfc","nfc_payments","payment_services","gtins","model_numbers","variants","colors","quick_release","band_compatibility","in_the_box","markets"],"notes":{"nfc":"Zepp Pay Contactless Payment section: NFC technology. The US page names Zepp Pay NFC only in the battery test scenario","nfc_payments":"Zepp Pay binds up to eight bank cards. Footnote 14: supported by Curve and participating issuer banks in 31 European countries. Only usable for payments in Europe","payment_services":"Zepp Pay, in Europe through Curve","gtins":"EU barcode from the Shopify product feed: 6972596108818","model_numbers":"EU SKU as the maker prints it: ACITVESBK-C0077035004. Retailer euronics.ie lists the black Active 2 Square as code 146-W2434GL2N, so W2434GL2N is kept as a model number without a variant row","variants":"EU variant Black Leather at EUR 149.90. The German store lists the same SKU and price","colors":"EU store option Black Leather","quick_release":"Strap, Materials: Leather, Quick release","band_compatibility":"Strap, Width: 20mm, Materials: Leather, Quick release. The silicone strap range is also 20 mm","in_the_box":"EU packing list lists the standard strap only","markets":"EU store sells it"}},{"url":"https://support.amazfit.com/en/amazfit_active_2%28square%29/files/user-manual.pdf.pdf","kind":"manual","accessed":"2026-10-15","fields":["manual_url","touchscreen","always_on_display","third_party_apps","compass","gesture_controls"],"notes":{"manual_url":"Active 2 (Square) user manual, 37 pages, June 2025","touchscreen":"Basic operations, pages 2-3: tap and swipe on the screen","always_on_display":"Always On Display section, page 4","third_party_apps":"Mini App installation, page 36: download and install more apps in the app store","compass":"Compass app, page 34. The sensor list names a geomagnetic sensor","gesture_controls":"Common gesture operations, page 3: cover the screen to turn it off"}},{"url":"https://support.amazfit.com/en/amazfit_active_2%28square%29/imgs/electronic_manual.pdf","kind":"manual","accessed":"2026-10-15","fields":["operating_temperature_c","charging_method","charging_notes","hardware_buttons","button_count","crown"],"notes":{"operating_temperature_c":"Basic Parameters, page 5: 0 to 45 degrees C. Model numbers A2434 and A2440 are printed in the same table","charging_method":"Charging the Watch, page 3: metal contacts on the back of the watch meet the charging base. USB-C attaches to the base","charging_notes":"Charging the Watch, page 3: use the supplied base and a power adapter with a charging current of 1 A or above","hardware_buttons":"About the Watch, page 1: an upper and a lower button","button_count":"About the Watch, page 1 shows two buttons. The maker spec table lists Buttons: 2","crown":"No crown is shown or described. The watch has two buttons and a touchscreen"}},{"url":"https://www.nasdaq.com/press-release/amazfit-expands-active-2-lineup-new-active-2-square-all-same-features-now-sleek","kind":"press_release","accessed":"2026-10-15","fields":["release_date","announce_date","launch_price_usd","launch_price_eur"],"notes":{"release_date":"Business Wire release of 16 June 2025, published on Nasdaq 17 June 2025: available beginning today on Amazfit.com and Amazon","announce_date":"The release says the Active 2 Square debuted at CES 2025. The exact day is not stated","launch_price_usd":"Priced at USD 149.99. US price excludes tax","launch_price_eur":"Priced at EUR 149.90, as published with VAT. The German Amazfit store lists the same price"}},{"url":"https://gadgetsandwearables.com/technical-specs/amazfit-active-2-square/","kind":"spec_database","accessed":"2026-10-15","fields":["ecg","bioimpedance","eda_sensor","blood_pressure","fall_detection","emergency_sos","led_flashlight","uwb","cellular","positioning"],"notes":{"ecg":"Electrical heart rate row says No and ECG says No","bioimpedance":"Body composition row says No","eda_sensor":"Galvanic skin response row says No","blood_pressure":"Blood pressure row says No","fall_detection":"Navigation, safety and special features row says No","emergency_sos":"Emergency SOS row says No","led_flashlight":"LED flashlight row says No. The manual Control Center lists a Flashlight control that lights the screen","uwb":"UWB row says No","cellular":"Cellular row says No","positioning":"GNSS rows list GPS, Galileo, GLONASS, QZSS and BeiDou. This matches the maker's five satellite systems"}},{"url":"https://gadgetsandwearables.com/2025/06/17/amazfit-active-2-square-vs-round/","kind":"review_site","accessed":"2026-10-15","fields":["os_at_launch","case_shape","offline_music"],"notes":{"os_at_launch":"The Square comes with ZeppOS 5.0 out of the box. One Russian launch article says 4.5, which contradicts this","case_shape":"Square body in the comparison table. The schema has no square option, so rectangular","offline_music":"Comparison table: Music storage No for the Square. The full manual only has phone music controls"}},{"url":"https://docs.zepp.com/docs/reference/related-resources/device-list/","kind":"manufacturer_page","accessed":"2026-10-15","fields":["os_latest","platform"],"notes":{"os_latest":"Amazfit Active 2 (Square) row: latest Zepp OS version 5.0. Latest API level 4.2 is separate","platform":"Zepp OS developer documentation lists the watch as a Zepp OS device"}},{"url":"https://euronics.ie/products/amazfit-active-2-square-smartwatch-amoled-fitness-lifestyle-watch","kind":"retailer","accessed":"2026-10-15","fields":["model_numbers"],"notes":{"model_numbers":"Product code 146-W2434GL2N for Amazfit Active 2 Square Black. The manual names regulatory models A2434 and A2440"}}],"fields_filled":89,"updated":"2026-10-15"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}