Functions: lighting, emergency, solar charging, energy saving 2. Gear position: switch on the lower right corner, light sense + human body induction. In the case of no light, people will light up when they come and go out when they go out 3. Material: plastic ABS Color: black Power supply: 18650 lithium battery *2 Battery life: 8-12 hours per charge, 1-3 months (5-10 times per day) Voltage: 3.7 V to 3.7 V Lamp bead: 40LED patch Range: 5-10 ㎡ Waterproof: IPX65 Power: 10 w Brightness: 400 lumens (theory)