Briday WF-502B XM-L T6 LED Belt Clip Adjustable Flashlight Torch Lamp with Battery and Charger for Hiking Camping Fishing Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent. 5 switch Mode: High&gt;Middle&gt;Low&gt;Strobe&gt;SOS Power by : 1x 18650 3.7v Size(mm):134 x 32(bezel)/23(body) Waterproof Flashlights for Camping,Biking,Working,Hunting Fishing,Riding,Walking