The built-in rechargeable 18650 Li-ion battery allows you to continuously use this led flashlight up to 5 hours after fully charged.. The led mini flashlight with full waterproof design, O-type sealed waterproof ring, so that the product better waterproof, normal use in heavy rain. The led cob flashlight is processed three levels of militory hardening treatment, wear resistance, corrosion resistance, non-slip in place. Suitable for hunting, biking, hiking, camping, outdoor activities, etc.. Strong LED light, Strong flash light, strong COB light, just press the switch button to switch to any mode to meet different needs. Mini led flashlight with COB side light two lighting methods to meet a variety of environmental needs, With Hanging Rope designed, you can hang it anywhere.