Specification:
LED Bulbs: 2 * SST40 LED
Charging time:7-8 H
Waterproof Rate: IPX4
Power Supply:1*18650 Battery
Material: Aluminum Alloy Head Lamp + Elasticity Head Band

Package Include (With Battery):
1*Headlamp
1*USB Cable
1*18650 Battery 2200mAh

Package Include (No Battery):
1* Headlamp
1*USB Cable

Notes:
simple UI: click to turn on/off, press and hold to choose brightness levels while headlamp is on.