1,Fully enclosed LED lamp with transparent acrylic shell. 2,Bright when touch water (continuous lighting), stop emit light when out of water. 3,High energy lithium battery can make the product work for more than 350 hours. 4,1000 meters deep underwater is realizable, waterproof and pressure-proof. 5,Hang it near a net or bait to attract fish and make more fishing fun! Features: Fully enclosed LED lamp with transparent acrylic shell. Bright when touch water (continuous lighting), stop emit light when out of water. High energy lithium battery can make the product work for more than 350 hours. 1000 meters deep underwater is realizable, waterproof and pressure-proof. Hang it near a net or bait to attract fish and make more fishing fun! Specification: Color: white, green, red, blue, colorful (optional) Material: acrylic Dimension (each): 2.5x4cm or 1x 1.6in Weight: approx. 18g Package List: 1 x Fishing diamond lamp Note: This light is disposable, the battery is not replaceable. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.