http://www.lightmobile.com/goods_show.aspx?id=407
The flashlight uses imported high brightness LED light source, aviation aluminum alloy shell and high-performance lithium-ion batteries. It has a hidden type sealing ring, enabling it waterproof, compression resistant and shock proof. Convenient charging, no memory effect.
Main parameters:
1. Power: white light: 3W
2. Lithium-ion battery: 3.7V 2,200mAh
3. Light spot size at 0.5 m: 22.5 mm in diameter
4. Continuous working time: More than 3 hrs
5. Adopting projector-type optical principle: uniform lighting, wide projection
6. Uniform light spot output, without chromatic aberration or light streaks.
7. A single button controls strong and low light as well as switch
8. Dimension: diameter of cylinder: 30 mm, total length: 165mm
9. Weight: 0.21 kg
