Features: 1. The lamp shell is fabricated from transparent plastic, and might be exposed normally inside three hundred meters of water depth. 2. Three waterproof ring, ensure no leakage. 3. The wick section is made from double sided epoxy board. 4. The circuit section provides a lift circuit to guarantee enough voltage. 5. In order to make the lamp skip type of colors, and increase the flashing mild IC. 6. You also can use microcontroller programming, to fulfill the various criteria of customers.