1Adopting high quality LED chips, super bright even if used underwater. 2Aluminum alloy construction, corrosion resistance, sturdy and durable. 3There are two switches for easy conversion of white light, red light and blue light, multiple lighting modes for you to set. The left switch is for white light (strong/medium/weak/long press for 2 seconds to close) and the other switch is for red and blue light (red/red strobe/blue/double click strobe/long press for 2 seconds to close). 4Can used as photography fill light for convenient shooting, as far as 300-500m, helping you capture more clear and vivid pictures or videos. 5IPX8 waterproof, water resistance of deep thread, waterproof depth reaches 100m, which make you rest assured use it underwater.