Features Work time: high-octane capacity battery, no memory function,lower rated discharge electricity ,can work continuously no less than 12 hours after it is charged fully and work all night long. Work area: It can send out signals,cautions and show the position in two different directions at the same time with the imported high-luminance LED . It抯 unidirectional maximum visible distance is 1600m. Operating characteristic: it can be hold and adsorbed at the surface of metal by its magnetic force, or fixed up at featheredge. The lamp can be adjusted according to your requirement. It is simple to operate and portable to carry. Suitable environment: With good leak-proof and waterproof ability is good ,it can workproperly under all kinds of bad environment outside field and can support strong force collision and impact with imported hard alloy crust. Protective device: It is equipped with the low voltage display unit, can remind the prompt charge; The intelligence battery charger has the short circuit protects and charges the display unit.