Cartridge battery. Battery capacity: 380mAh, short circuit and overload protection.

LED indicator for power:2,7V - white, 3.1V - blue, 3.6V - red.

Wattage: 7W-10W, preheating time: 15s.

1) 5 click On / Off

2) 3 click to adjust voltage

3) 2 clicks to preheat