Aquatec LED Clip On Mask Light Waterproof up to 120 Meters 3 Hour Burn Time Location: Clip on Mask strap, or your Pockets Overall length: 10 cm; Waterproof: 120 Meter Burn time: 3 Hours (100%~50%), 8 Hours (100%~10%) Accessories: Lanyard, 1 x AAA Alkaline Battery & Mask strap clip included