HW21 SmartWatch Bluetooth Sleep Monitor Fitness Heart Rate

Product information:

Appearance size: 4.2*8.9
Material: Alloy
Battery capacity: 200mAH
Product weight: 41g
Body memory: 64M
Wearing style: Wrist strap
Operation mode: touch + button
Interface: USB 2.0

Packing list:
Watch, strap, manual, charging cable x1