Thsinde - Smart Watch Big Screen Life Waterproof Blood Pressure Heart Rate Blood Oxygen Full Touch Screen Sports Bracelet

Appearance size: 45.4mm * 22.7mm * 14mm black [Watch improved, but not more expensive! ] The R3 is one of our most satisfied watches, it comes equipped with more advanced hardware, such as an optical heart rate sensor, acceleration sensor and blood oxygen saturation monitor. And has more than 20 functions. Thanks to the development of technology, we only have to pay the same purchase price to get better watches. [Butler Health] The watch will automatically monitor your heart rate, blood oxygen saturation, and sleep quality throughout the day to make sure you know your health the first time around. Although it is not a substitute for professional medical equipment, data which has been repeatedly tested by the watch is still reliable. [Long battery life] R3 has undergone sophisticated design, strict assembly and strict quality control. It has good water resistance, so you don’t have to worry about damage from rain or shower. And the smart watch is equipped with a 220mAh battery, which