H2o introduces the worlds first water pressure powered shower timer. This elegantly designed timer can be fitted directly on the screw thread of your shower. By turning on the water, the water flow will power the integrated turbine generator which creates energy for the internal electronic timer and coloured LED lights. For the first 4 minutes the shower indicator will glow green, then between 4 & 8 minutes it will glow blue. After 8 minutes the led will glow red and finally over 20 minutes (if any water is left), the shower indicator will flash red!!! This device will politely remind you of your showering time and so help you to save energy, water and money. Simple to fit – no tools required – can be installed by anyone in under a minute. 2 year guarantee