The lamp uses environmentally friendly and efficient maintenance-free imports of lithium-ion polymer battery， with ultra harsh environment， and energy-saving LED light technology， carefully designed and manufactured in accordance with the relevant standards. LED light-emitting source has high luminous efficiency， no heat loss， LED long life， permanently avoid changing a light bulb， battery standard voltage 3.7V， standard capacity battery is 2200mAh， 8 hours of continuous illumination light， low light continuous lighting time of 15 hours， the normal charging time is 8-12 hours， battery charge and discharge cycles up to 600 times， is tapping pick vegetables， salvage and rescue， forest patrol， underground construction， adventure travel， camping is a good helper.