M4 Smart Band Wristband Blood Pressure/Heart Rate Monitor/Pedometer Sports Bracelet Health Fitness Bracelet Smartwatch

Type: Electronic Alarm Equipped
Total Length: 235mm
Band Width: 22mm
size: 4.1cm * 1.2cm * 1.9cm
material: ABS, main body cover PC, strap TPU
battery: lithium polymer battery
battery capacity: 80mah
color: black,blue,red