When it comes to items you constantly carry, smaller is better. The Bullet 02 Flashlight is as small as you can get, weighing just five grams and measuring in at 10 x 26 mm. Inspired by a 40 S&W round, its anodized aluminum casing is nearly indestructible, and thanks to a new design it's waterproof, as well. The high-quality LED bulb lasts up to 150,000 hours, produces 20 lumens of light, and is powered by three button bell batteries, activated by a quick 180-degree rotation of the top. Available in matte black or matte brass.