Function and Feactures: 1.Cranking for power, low noise but high efficiency. 2.High luminance LED lighting. 3.Rainproof:IP44. 4.The lens is here to shift into Red LED SOS-FLASHING. 5.Switch models:Low level brightness→high level brightness→Flashing→off. 6.90° verticle flexibility. 7.Lightweight size, convenient to carry. 8.Battery smart protection: Over charging protection, over-discharge protection, short circuit protection. Main Technical ParameterLightingLighting time after 1 minute cranking (High level)≥5minLighting time after 1 minute cranking (Low level)≥12minFlashing time after 1 minute cranking≥18minThe Max. Luminous flux≥5LmLighting distance(Center point luminous intensity 0.2lux)≥10mMain parts life-spanLED lifetime≥50000hr. Switch lifetime≥10000times The whole unit lifetime≥5yr. The plastic part lifetime≥5yr. OthersSpecification of bulit-in batteryChargeable lithium battery,,80mAh,3.6VMotor2.5W Brushless