H19 Smartwatch is a product that is easy to wear and can be used to collect fitness data and information. After 2 hours' charging, it can be used for 10 days. This lightweight, waterproof smartwatch lets you achieve your health and fitness goals with all-weather heart rate, activity tracking, motion tracking, sleep monitoring, and screen exercise. In addition, the colorful sleek look and durable strap and dial fit any fashion outfit.

Main Features:
● NFC analog IC door card, after the smart door lock writes data to the wristband, you don't have to care if you forget to carry the door card
● Daily sports activity tracking, built-in pedometer, calorie data, synchronized mobile phone GPS, moving distance, multiple sports mode records, etc. Break your own records every day
● Real-time health monitoring - heart rate, blood pressure, blood oxygen and sleep monitoring to take care of your health
● Portable extensions for smartphones, never miss a call. Call reminder, one-click rejection, information push, remote shutter, etc.
● 1.3 inch 240 x 240 TFT color display for full display of multiple text messages
● IP67 waterproof, no need to worry about sweating or rainy days, swimming
● 180mAh lithium-ion battery, working time is up to 10 days, standby time is 30 days after charged for 2 hours
● Different dial styles and colors to choose, free combination

Tip: resting the bracelet at night may result in inaccurate sleep data. It is recommended to use this product continuously to monitor body movement characteristics.

Specifications:
APP: Da Fit
Chip: NRF52832 QFAA
Heart rate sensor: dual PPG Heart Rate Sensors Module HRS3300
G-sensor: BOSCH BMA421
NFC: integrated circuit card, 13.56 MHz, 16 sectors ( 0 - 15 ), NXP MIFARE1 / S50