Remote control:Each fireworks light comes with a IR remotes controller (no battery required) to control the lights up to about 10m-15m,if hot tub lights stuck in red and can't be controlled by remote,it means the batteries run out,just replace the batteries (1pc CR2025) to solve the problem.
Waterproof:Powered by 4pcs AA batteries (not included),IP65 waterproof.
Usage:Can be used at home,bar,restaurant,supermarket,party,holiday and decoration.