Wasting water is not wise but many of us manage to do it inadvertently anyway. The HYDRAO First Smart Shower is a showerhead that gives you a visual way to monitor how much water you use while taking a shower. It replaces your existing showerhead and uses a multicolor LED system to let you know when you are wasting too much water.
The HYDRAO First shower allows users to customize water usage threshold on their smartphone. It maintains history for up to 1000 showers. The device will be compatible with iOS and Android devices.[where to get it]