Long Distance Radio Frequency Remote Control: The pool light with radio frequency remote control has a wider and deeper long-distance range, up to 20M/66FT in the air and 16.4FT/5M in the water. The signal is strong, the remote control can control multiple lights at the same time, without pointing at the lights. When using underwater, stay close to the lights and control them. Size: 9*4.5 cm Long Working Hours: These LED pool lights are powered by 3 AAA batteries (not included), which are more energy-saving than ordinary lights equipped with 3 AAA batteries on the market and can provide a longer working time. IP68 Waterproof Design: Specially designed internal and external double-layer rubber sealing rings to improve waterproof performance and provide a stronger waterproof function than similar products on the market. You can immerse the colored lights in the pool,"