Characteristic: Energy Save: Charge by hand wind and solar, without use public electronic; Alarm: While glow caution glittering, alarm sounding. Safety: Low pressure of self power supplied system. Portable: Novelty, small and other emergency situation Useful: used in vehicle, tourism, camping, mine and other emergency situation. Environmental Friendly: without use dry batteries and refuse to pollution the environment; ues AC three phase dynamo and could anti-jamming from batteries.