Water-activated automatic safety strobe light, perfect for maintaining contact with your buddy or trainee in poor visibility. Features a stainless steel safety-pin attachment, measures just 89 mm in length, and weighs only 27 grams. Flashes green 130 times per minute, depth-rated to 100 metres, and offers an impressive 750 hours of burn time. Automatically turns off when dry, making it reliable and hassle-free for every dive.