Sony's 4.6-inch Xperia ZR is smaller than the 5-inch Xperia Z released earlier this year.

Sony is continuing to expand its Xperia line with the Xperia ZR -- a smaller, pared-down version of the Xperia Z flagship phone launched earlier this year. 

Like the Z, the ZR also claims to be waterproof (up to 1.5 meters deep for as long as 30 minutes in fresh water) and dust-resistant. The display measures 4.6 inches, compared to the large 5-inch screen on the Xperia Z. Camera specs on the ZR seem to be the same as the Z with a 13MP Exmor RS sensor. The phone is powered by a quad-core 1.5 GHz processor with 2GB RAM.

At this point, Sony is only saying that the Xperia ZR will launch in various global markets starting sometime this quarter. 

You can read the full press release from Sony here, and watch what to do with the ZR at your next pool party below: