Product features: 1.Light source uses CREE LEDs, high efficiency & long lifetime. 2.CNC processed casing with hardened oxidation, shock & impact resistant. 3. Battery with protection against over charge, over discharge and short circuit. 4. Waterproof IP65, corrosion-proof WF2. 5. Smart and pretty, portable & wearable. Specifications: Order Main parameters Unit Value 1 Power W 1 2 Working voltage V 3.7 3 Battery capacity Ah 1.4 4 Waterproof level / IP65 5 Corrosion-proof level / WF2 6 Life time Battery cycles 1000 Light source h 100000 7 Working hours Weak h 10 Strong h 5 8 Dimensions Length mm 115 Diameter of lamp head mm 23 9 Weight g 95