1.Used 2sc NI-MH recgargablebattery 2.Used CREE XPE-R2LEDandelectronic power regulator. 3.High-strength aluminum-body 4.Output brightness: 250lms 5.Water resistant 6.Long runtime and more than 100,000hrs LED lifetime 7.100-240v AC-DC charger 8.High hardness giftbox