It is totally waterproof (IP 68). You can put it directly in the water. It is remote control within 10m.
The diameter of the light is 7cm and the height is 3cm
There are 15 different colors you can choose from the included remote. You also have the option of a few different effects (flash, strobe, fade, smooth) which will cycle through the colors automatically.
There are 10 leds, so the light is strong and bright. Suitable for vase, water, aquarium, party,Christmas decoration, Birthday etc.
It operated by 3*AAA battery, which is not include in the delivery