EASY TO USE: No need any cable, its powered by 4*AA batteries(not included). Only one button to turn on and off. Ideal for Diving, Outdoor Sports, Night Fishing, Rescue, Camping, etc. WATERPROOF: Using IPX8 waterproof grade, its suitable for diving to 98ft/30m. Satisfy your general need. Rubbers on surface are also waterproof. The whole body is completely anti-water! HIGH QUALITY: Use quality LED lamp bead, the light bulbs can last up to 50,000 hours. The surface of whole body are wrapped with rubber which will not slip when in hand. SAFE: 300lm great light, bright enough to illuminate no matter underwater or in dark. Besides, its eye-protection. Prevent accidental injury to the eyes of children or adults. LIGHTWEIGHT: 96g, 6.49inchX1.77inch (Length X Diameter), portable enough! Very easy and convenient to carry to the place you want. Its amphibious!