Rate of 1.5 meters of prevention ability, IPX8 waterproof standard (2 meters) underwater, the keyhole design, convenient carry, key chain technology was optimized by using digital manufacturing system of optical lens, the defense of the circuit protection function, quick charge 1 hour, quickly meet the demand of use, using Micro USB cable charging, double color LED indicates charging status, use of rechargeable lithium ion battery 10180 (from the tube end to replace), using xp - G2 lamp bead, 100000 hours of life