Packing list:4 Lights and 2RF Remote Controls Hot tub lights can be installed with 4 suction cups, it is better to use 3xAAA batteries (not included) Our submersible LED lights with a special waterproof structure, heat-resistant, silicone rubber sealing ring prevents waterfrom entering and guarantees a long service life The submersible LED lights is suitable for indoor/outdoor lighting, decorative lights or night lights 16 Colors and 3 Dynamic Modes Pond Light Built-in 13 premium LED beads RF Remote Control and Timer Lazy spa lights easy control via RF remote control; The remote control can reach a wider and deeper range (up to 164ft/50m in the air, 10ft/3m-16.4ft/5m underwater); The optimal control range we recommend is 2m (for large/deep pools or through walls) to 30m (in the air) One remote control can control multiple lazy spa lights at the same time, built-in timer, 2h, 4h, 6h. 4 Magnets & 4 Suction Cups Four updated silicone suction cups for each pond lights have stronger adsorption The built-in magnet not only ensures that the pond lights can be easily attached to a smooth metal surface, but also does not rust if it is left in water for a long time The suction cups can only be in the air and underwater on a flat and smooth surface can be used This light is the best choice for you to light up your swimming pool, pond, bathtub, fountain basin, fish tank, vase and flower pot etc