Lamp-house: high brightness LBD,contains 20 thousand hours, luminesence, light lampwick temperature is 60 degree and the surface temperature is normal, will not cause explosion, low-cost electricity, stabilization.

Battery: lithium battery, small size, portable, charge times more than 500 times, no memory system, protection free, environmental friendly and not complicated.

Lamp-house: special incandescence bulb, the natural life is 100 hours. Frequently change bulb. filament temperature is more than 2000 degree, bulb temperature is 600 degree. High temperature could lead to explosion. Electricity-gazzling with no long-time quality.

Battery: basic sulfate lead battery, big size and heavy weight, need protection, the outlet is harm to healthy and environment.