1. solar battery board: single spathic silicon battery board

2. storage battery: 3*AA 700MAH Ni-Mh, also can use common charge battery

3. bulb: 7 super light leds, 45LM

4. range: 50M, visible light can reach one kilometre

5. material: metal, treat with oxidation in order to defend acid,alkali, scrape

6. size: 18.5*2.9CM

7. weight: 210g

8. charge: 6-8 hours by sun shine can be use 2-3 hours