Can be used as emergent light when in power failure by pushing to upper/ lower level. Also suitable for car maintenance when driving in dark nights. Widely used for outdoor activities such as hunting camping, fishing, hiking, caving, climbing, etc. Special design with a handle for expedient carry. The emengercy light is with built-in long-life and maintenance-free rechargeable battery of high capacity up to 2000 mAh. The battery has more than 500 times's chargeing and discharging recycle life. LED is in advantage of enregy-saving, high light, long life and high power.