Product information:

Product Name: head sleep instrument
Material: ABS + magnet
Overall size: 40.8 * 66 * 10mm
Charging input: 50t02v180mat30ma
Full charge time: 5V / 15min
Voltage and current: 3.7V
Built in Battery Specification: 200MAH
Charging output interface: Standard V8 interface
Electrode material: composed of non-woven backing, gel layer, polyethylene film, etc.
(no volatile pharmacological, immunological or metabolic components)