Basic Parameter: Bracelet size (mm): diameter 45.5*11mm Weight: 130 grams Main functions: step counting, heart rate, exercise mode, blood oxygen, message notification, weather, alarm clock, sedentary reminder, breathing training, mobile phone search, remote photo taking, body temperature, OTA upgrade, female menstrual cycle. Hardware parameters: Chip manufacturer: Tai Ling Wei Chipset: TLSR8251F512ET48 (Telink 8251) APP: AdorHealth Compatible System: Android4.4 (inclusive) or higher, IOS9.0 (inclusive) or higher FLASH memory: RAM: 32KB, ROM: 512KB, Flash 8MB Type (Type): TFT screen size: 1.28 inches Pixel (Resolution): 240*240 resolution Touch Type (Type): full touch Connection parameters: BT: BLE4.1 WIFI: not supported NFC: Not supported Sensor: Gravity sensor: support Gyro: not supported Heart Rate: Silan Micro GPS: Not supported Thermistor temperature sensor: support Battery: Battery type: polymer Capacity: 190mAh Charging method: thimble line charging APP software function: AdorHealth: steps, sleep, heart rate, blood oxygen, exercise mode, message push, daily alarm clock, unit settings, control camera, do not disturb mode, drink reminder, find bracelet, time format, do not disturb mode time period, All-day heart rate test, raise your hand to brighten the screen, app Other parameters: Waterproof rating: IP67 Charging time: about 1.2 hours Life time: 5-7 days of use Wristband size: total length 249, adjustable length 168-234 Appearance material: Main body: plastic + metal Wristband: Silicone/TPU+Stainless Steel Clasp Features and advantages: Sports mode: The watch itself can choose 9 kinds, and there are 18 kinds through APP Activity record: steps, distance, calories Heart rate blood oxygen: heart rate warning star Female health assistant: reminder of menstrual period and safety period Body temperature: The watch will upload body temperature every 10 minutes, which can be checked through the APPMusic playback control: Can not directly drive the player, so you need to open the player on the phone first when controlling Alarm clock: Set up to five groups of alarm clocks, you can set event alarms, and the watch will remind you of the content. Message push and deletion: To delete a message, only clear all the messages, press the up button. Find mobile phone: You can search for the mobile phone when connected, but the disconnection reminder has not been found yet. Raise your hand to brighten the screen: in the APP "Screen Settings-raise your hand to brighten the screen-set the switch and start and end time Dial Center: The watch has 5 dials, 1-5 can be replaced; you can also customize the dial and upload your own photos.To List: Watch*1 Data cable*1 Manual*1 Packing box*1