●Small and Lightweight: The worlds smallest waterproof LED light. Only 0.1 oz (4.5 g). Ultra lightweight and ultra small slim design makes it convenient to attach to key chains ●Fully Waterproof: IPX-6 waterproof rating ●Brightness: 80 lumens / Maximum illumination distance: 65.6 ft (20 m) ●High Output Chip: Uses 3535 LED chips ●Material: Aluminum alloy