The floating pool light functions with 7 different modes, glowing, flashing, color-changing, floating on the water and projecting the light into your pool, it's a pretty cool decor, also can be a fun toy for kids in a bathtub. The bath light is made of PC ,non-toxic,BPA free, smooth edge reduces risk of injury, can be safely used in water and waterproof effect is very good. (Please note don't submerging it under the water) This light has a hole on the edge you can hanging it where you want. Waterproof design make it perfect for swimming pool, pond, bathtub, hot tub, fountain or aquarium, etc. Use it adding a disco touch or a festival atmosphere to your occasion. Open the battery compartment with a screw driver. Put 3* AAA batteries (not included) then close the lid and tighten the screws. Attach the dome, press the button, If you want to turn it off, just press and pause for 3 seconds. It has a wide irradiation range and is suitable for any scene. Such as bars,swimming pools,fountain pools,ponds,aquariums,fish tanks,bathtubs,bathrooms,hot tubs,party decoration lights,parties,atmosphere lights, or night lights for indoor and outdoor decoration.