SecurityIng&reg; High Power 700 Lumens LED Flashlight Stainless Steel Shell Long-Range Lighting Lamp 5 Modes Flashlight Torch Powered by 2 x 16340/CR123 Batteries or 1 x 18650 3.7V Battery (Not Included) for Camping, Hiking, Home Using, etc With 1 x Cree XM-L2 LED whose lumen is up to 700lm and the lifespan is more than 100,000 hours. Solid stainless steel shell, IP66 waterproof level, equipped with constant voltage, current circuit. Stable working performance, suitable for bicycle lighting, guiding, camping, cave exploring, etc. 5 modes adjustable: High / Middle / Low / Strobe / SOS. Power Source: 1 x 3.7V 18650 rechargeable li-ion battery(not included).