It is the mobile phone you can use in the bath or shower without fear – and can even survive being dropped down the toilet.
Sony has unveiled its latest mobile phone – and hopes the waterproof design will help it take on the iPhone.
The Xperia Z was unveiled at the Consumer Electronic Show in Las Vegas.
Sony says the handset, which has a 5in (12.7cm) screen, is capable of being submerged in water of up to one metre (3.3 ft) in depth for 30 minutes.
The firm says it can survive being dropped in a toilet, and if it gets dirty, can simply be washed under a tap.
Sony claims that about one in 10 people had dropped their phone down a toilet at some point, something this would protect against.
The trade-off is that handset’s various ports, including the one for its headphones, all feature protective plastic covers that must be unclipped before they can be accessed.
The handset also has an NFC chip allowing owners to play back video on their TV simply by tapping the phone against it.
This chip could also be used as a credit card in the future, it is believed.
Stuart Miles, Editor-in-chief of tech website Pocket-lint.com told MailOnline: ‘The Sony Xperia Z has so many features and so much going for it, it really could be the phone to restore Sony Mobile’s fortunes.
‘It’s probably the company’s best phone yet.’
‘With Xperia Z, we are bringing over half a century of innovation in TV, imaging, music, film and gaming to create a superphone experience that truly stands out,’ said Kuni Suzuki, President and CEO, at Sony Mobile Communications.
‘With great specifications, Sony’s media applications, One-touch functions and outstanding battery life, Xperia Z is well positioned for leadership in the smartphone market.
‘By putting smartphones at the heart of our strategy, Sony is enabling people to create, enjoy and share content and experiences like never before.
However, analysts has the firm has a tough battle, with both Apple and Samsung set to reveal new handset in the coming months.
‘In isolation this looks like a very strong product and it’s the most attractive Xperia phone that I have seen for a very long time,” said Ben Wood of CCS Insights.
And the Xperia wasn’t the only waterproof gadget on show.
Sony announced a pair of waterproof headphones with built-in MP3 player.
The Walkman W273 is a light, flexible pair of wraparound earphones which are designed to work while you’re swimming.
And it’ll work flawlessly with everything from Handel’s Water Music to songs by Wet Wet Wet.
The Walkman W273 goes on sale on 1 February for £60.