Specification: 
Portable LED headlight metal shell
High intensity:>15000-30000Lux
Continuous run-time:>5 hour
The power of the LED bulb:1 W
The lifetime of the bulb:10000 hour
All loupes are optional
Very small volume and weight
Battery pack weight:100g
Charge voltage:AC110V/240V/50-60Hz
Rechargeable lithium battery
Light weight, longevity,more comfortable carry
Packing List: 
1. LED head light: 1 each
2. Adaptor: 1 each
3. Battery: 1 each
4. Clip: 1 set