This innovative little product is a cool & practical way to add a splash of colour to your kitchen or bathroom. This little gizmo turns the water in your taps into a colour-changing light-source which has a number of useful applications. The Glow Flow is heat detectable & turns the water blue when it is cold & red when hot, meaning it also can prevent children burning their hands under hot water. 3 X AG13 Cell Batteries Included Only Glows When Water is Running Long-Lasting LEDs Easy to Fit -Universal Adapters