Display screen size 1.7inch Touch form capacitive full touch Capacity 220mAh The upper cover of the whole machine is tempered glass Fuselage zinc alloy (vacuum degree) Watch strap TPU CPU BLE5.0 Erwan Semiconductor is2806 Heart rate sensor common heart rate EPK micro EM7128 External flash flash 128M External SD card 1G Acceleration sensor G-sensor Swaziland micro SC7A20 Temperature sensor Temperature sensor High precision NTC thermistor TP full-touch CST816S Vibration motor 0827 flat motor Display 240 * 280 1.7 inch Key 2 touch switches UI interface Dual UI interface can achieve smooth interactive dynamic UI effect Android system version above Android 4.4 Apple system version ios 8.4 or above Bluetooth voice call dual-mode Bluetooth call Local music playback supports the storage of 30 songs (depending on the song size) Bluetooth headset supports independent link TWS to play music Call dial support Recording support GPS calls mobile GPS Up to 1000 contacts can be synchronized Save up to 50 call records Message reminder support, save up to 20 messages (can be deleted) Time display support Step counting support Calories support Distance support Sports mode support (yoga/elliptical machine/basketball/mountaineering/badminton/running/walking) Hands up and bright screen support Sleep monitoring support Track support Call reminder support Support for sedentary reminder Weather synchronization support Alarm reminder support Shake and take photos support Find phone support SOS support Drink water reminder support Do not disturb mode support Find bracelet support Dial switch support Full point measurement support Temperature detection support Heart rate support Blood pressure support The game supports two kinds of games Blood oxygen support Apple Health Support Health weekly report support Bluetooth name supports customization Band language (default English) Chinese, Traditional, English, Spanish, Portuguese, Japanese, French, German, Russian, Polish, Persian, Thai, Malay, Turkish, Italian, Arabic, Vietnamese APP language (follow mobile phone) Chinese, Traditional, English, Japanese, French, German, Russian, Korean, Greek, Italian, Portuguese, Arab, Spanish, Persian, Thai, Turkish, Vietnamese Information push support Information push support languages: Traditional, English, Spanish, Portuguese, Japanese, French, German, Russian, Polish, Persian, Thai, Malay, Turkish, Italian, Arabic, Vietnamese APP name V Band Standby time more than 40 days OTA upgrade support Charging mode Magnetic suction charging