NiteCore TM06-3800LM Smallest and Lightest LED Flashlight/Searchlight, Black The world's smallest and lightest 3800 lumen flashlight Utilizes four CREE XM-L2 U2 LEDs Tactical forward switch on the tail cap Powered with 18650 Li-ion rechargeable batteries (Not included) Waterproof in accordance with IPX-8 (submersible to 2 meters)