For those who spend too long in the shower, this invention is for you.

As seen in the above video, a shower head can tell you how much water you have used in the hope of saving both energy and money.

A simple change of colour indicates how many litres of water have been used, before a red flashing light tells you when it's time to get out.

On average, 80 litres of water are used per shower. From any smartphone, Hydrao's shower heads can be set to alert you at whatever level of water consumption desired. 

While some were keen to know where the device can be bought, others questioned its necessity. 

As Shaun Bruneau commented: "People are becoming useless without a device telling them what to do, this is ridiculous". 

Set to launch this year, the product had been on show at the Consumer Electronics Show (CES) in Las Vegas. 

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