The Dreem Band has a Lithium-Polymer (or Li-Po) battery complete with STOBA technology that prevents accidents even in cases of violent shock, short circuiting or drilling.
The battery weighs 1200mA.h/ 4,44W.h.
TIP: You can leave your Dreem Band plugged in the whole day. Once your headband is 100% charged, the power supply is cut automatically. It won’t cause damage to the battery or consume any electricity.