1 Working voltage: DC 5V
2 Working current: 13-17MA
3 Power interface: Type-c(Support TYPE-C TO TYPE-C power supply)
4 Frequency: 7.83Hz pure sine wave
5 Signal voltage amplitude: 3V
6 With 3.5MM audio output
7Size : 73*72*26MM
8 Weight: 62g

How to use:
1 Use a power source with a TYPE-C interface (mobile phone charger, mobile power source, etc.)
2 Plug in the TYPE-C power source and the LED will flash.
3 Place it where you want to use it.

features:
1. Schumann waves are very low-frequency electromagnetic waves that can penetrate matter and are non free radiation
2. This product simulates a natural regenerative magnetic field through electronic means, such as using a square wave generator to generate an artificial Schumann wave frequency of 7.83Hz.