Along with the Xperia Z4 Tablet, Sony has announced the mid-range waterproof Xperia M4 Aqua today at Mobile World Congress.

With a 5" 720p display, 1.5GHz Qualcomm Snapdragon 615 Octacore, and 2GB of RAM, the Xperia M4 Aqua doesn't seem too impressive to begin with. However, when you start factoring in all the other specs, you'll understand why Sony says that there are "no compromises" in this mid-ranger.

First up, a 13MP camera (remember when that was a feature of high-end smartphones?) with Sony's Exmor RS sensor and a large F2.0 aperture with 3200 ISO sensitivity dons the back of the Xperia M4 Aqua and adapts to various environments. Second, the front 5MP "selfie camera" carries a wide-angle lens so that everyone fits in the same shot. Complementing the hardware is Sony's suite of Xperia Camera apps with Sound Photo, Movie Creator, Portrait Retouch, and more.

Another selling point of the Xperia M4 Aqua is hinted at in its name: it's IP65/8 water and dust-proof, with a capless MicroUSB charging port. Like the Xperia Z4 Tablet, this is a great bonus compared to Sony's previous waterproof phones (which required you to fiddle with the cap each time you needed to charge, and make sure it's completely hermetic before immersing it).

A 2400mAh battery powers it all, with up to two days of battery life and Sony's Stamina Mode to keep it going when you're away from a plug. As for connectivity, there's Bluetooth 4.1, NFC, WiFi, LTE (in some markets), and ANT+ as a bonus for fitness addicts. Android 5.0 Lollipop runs the show, with Sony's skin on top.

The Xperia M4 Aqua measures 145.5 x 72.6 x 7.3mm, weighs 140g, and comes in regularly-named color variants: white, black, coral, and silver. It will launch this spring for approximately 299EUR in 80 countries worldwide and over more than 100 carriers.