SecurityIng Powerful 4200LM 7 LEDs Flashlight with Waterproof & Self-Defense Function 3 Switch Modes Super Bright LED Lighting Lamp Torch (18650 Rechargeable Battery Not Included) Super Bright & Long Service Life With 7x Cree XM-L T6 LED, producing the super bright light which can be up to 4200LM. With a lifespan of up to 100,000 hours, no need to consider replacing the cap for the whole life. Power Source4 x 3.7V 18650 Rechargeable Batteries (Not Included). Lithium battery provides excellent continuous power sources to your device. Adopts the high efficient booster circuit which can utilize the batteries in the largest extent 3 Modes & Easy to use High / Low / Strobe (Long press the button for at least 3 seconds). One button operation, easy to operate. Suit for your different needs. Water Resistant & Wide Application IP67 waterproof level, you can use it even in the rainy day. Suitable for both outdoor and indoor use, idea for camping, hiking, fishing, repairing, walking the dog, thunderstorms, hurricane, power outages, emergency events, etc. Sturdy & Durable With durable aluminum alloy shell, skidproof and shock-proof endure rough handling, protect from scratches, abrasions and corrosion. With a neck rope, convenient to carry.