Shower Coach Alarm. Keeping an eye on the time you spend in the shower is easy! Go Green’s Shower Coach Alarm is a waterproof device that can be attached to any slippery surface using the suction cup. The shower coach’s alarm will go off when the preset time has passed. Saving energy is easy when you can see how much time and water go down the drain when you are under the shower. Specifications: Material: Plastic Shape: Drop Fixation: Using the suction cup Colour: Blue One-Year Guarantee