Granvela UltraTac K18 Flashlight 360 Lumen IPX-8 Waterproof Portable Mini AAA Keychain Cree LED Torch-Black The flashlight is made with anodized aerospace aluminum for non-slip comfort, level IPX8 water resistance and 1.5m impact resistance perfect for the tough conditions or everyday use Direct Thermal Path (DTP) Copper MCPCB provides excellent heat dissipation to ensure the best light performance. AR coated lens, 99% light transmittance; Light source: CREE XP-G2 S2 LED; the joints with O-ring are sealed ; support 4 lighting modes (high, medium and low) plus strobe via the side button switch. 360 lumens max output ensured by a 10440 li-ion battery; it also offers a 110 lumens output by using a single AAA battery. You will be marveled at its small volume and light weight; it can be put in a purse, pocket, or simply fasten onto your cap by detachable two-way clip.