Can be charged with a standard phone charger, comes with a USB charging cable (no charger).
Functions to choose from: left button 100%, 30%, 10% and flashing in this order.
On the right Smart sensor function.
The red light comes on when you press both buttons until it lights up, and starts flashing when you press the left button once.
Dimensions: 65 x 45 x 40 mm
Operating time with a full battery 4-30 h
Battery 3.7V / 1200mAh