http://www.sonymobile.com/global-en/products/phones/xperia-z2/features/#Durability
Waterproof and dust resistant
The Sony Xperia Z2 has an impressive IP55/IP58 rating, which makes this slim and sleek smartphone both waterproof and resistant to the tiniest dust particles.
Snap away underwater
With the waterproof Xperia Z2, you can take pictures while swimming in freshwater for up to 30 minutes. You can even dive up to 1.5 m with it. You can even dive up to 1.5 m with it. Just remember that all the covers for the micro USB port, the micro SIM slot and the memory card slot must be firmly closed.
IP (Ingress Protection) rating
IP 55/58 – what does it really mean? IP rating is a certification testing to measure a device’s resistance levels to both dust and water. The first digit in the two-digit IP rating indicates the level of protection against solid objects, including tiny dust particles. The second digit indicates how resistant the device is to water.
In compliance with IP55 and IP58, the Xperia is protected against the ingress of dust and is waterproof. Provided that all ports and covers are firmly closed, the phone is (i) protected against low pressure jets of water from all practicable directions in compliance with IP 55; and/or (ii) can be kept under 1.50 metre of freshwater for up to 30 minutes in compliance with IP 58. The phone is not designed to float or work submerged underwater outside of the IP55 or IP58 classification range. This may lead to your warranty being void. Get the full story
