1. solar cell: crystalline silicon 4v,250mA
2. battery: Ni-MH 1.2V/1500mAh
3. light source: instant super illuminosity 6LED
4. colour: yellow,white,green,red,blue  (choose one)
5. illumination ways: lasting and changeable light
6. work time: charge up one day under the standard illumination, the light has more than 25h work time; if under the full capacity of battery, the light can last more than 50h
7.  temperature: -25°C~+75°C
8. hardware material: stainles steels fixture and waterproof and airproof silica gel;
9. dimension: diameter：170mm, thickness：35mm
10. waterproof grade：IP>67