Turn on the fun in your shower just by turning on the water, the Thermostatic Digital will display the temperature of the water (in Celsius Degree). So you always know how the water will feel on your skin just by looking at it. Never be scalded again by entering a shower that is just too hot! Everything is self-powered by a built in dynamo that takes advantage of the water temperature. Feature: 1. 1/2" standard connector. 2. Easy to install and clean (can be cleaned with mild soap to ensure the non-tarnish life shine). Package include: (1) 12" Chrome Plated Brass shower head with ceiling-mount shower arm . (2) 3 function (one at one time) Thermostatic Digital Display solid brass control valve (3) 6 massage jets spray (4) Heavy Duty Plastic hand shower with Brass hook and Brass outlet. PLEASE NOTE: This system comes with an Advanced Thermostatic Mixer Valve which gives you flexibility of using one function at one time. Please note we also sell square jet spray, so let us know if you want them instead of round jet spray. Brand New - 100% Satisfaction