16 Colors and 4 Lighting Modes: Submersible LED Lights can be adjusted to 24 different static modes and 4 dynamic color change modes through the 18-key remote control. The Submersible LED Lights has a dynamic color changing effect, which can create an instant and eye-catching multi-color lighting atmosphere anytime and anywhere. Upgraded Remote Control: Upgraded to RF remote (radio frequency signal), not IR (infrared ray), not afraid of signal block, control conveniently even there is a wall between you and the light. (Notice: The remote is not waterproof; pool water would largely reduce the control range, please get close to the light and control when use in pool). Rechargeable Large-Capacity Battery: Bathtub light are equipped with a built-in large-capacity rechargeable battery, which can be charged by a USB cable（include）. It is 5 times brighter than other submersible lights that are AA or AAA battery powered pool lights. 2-3H full charge, pool lights can continuously last up to 16H at their brightest setting and up to 100H at their dimmest setting. you don't need to buy extra batteries. IP68 Waterproof & Suction Cup: The waterproof bathtub light is highly waterproof and can be used directly in the bathtub/fish tank/pool/vase. It is made of double waterproof structure with transparent silicone seal, not only waterproof, but also provides beautiful and dazzling lighting for the pool. It also comes with suction cups for stronger and more durable suction, the maximum suction force can reach 2.5kg. Note: Do not leave in water for more than 10 hours. Widely Used: The bath tub light can be widely used indoors and outdoors. Such as swimming pool lights, hot tub lights, pond lights, fountain lights, aquarium, fish tank, bar, pub, vase base, wedding, party, Halloween, Christmas.