Sony Xperia ZR is a scaled down version of Sony Xperia Z, which means that they have conserved the water resisting and dust proofing ability of the Xperia Z in this Xperia ZR and only reducing the other hardware specs in size and performance.
So this is obviously available at the lower prices when compared with Xperia Z and so customers planning to spend less than 30,000 INR on a smartphone can go for this device as it is available on Infibeam for pre-order at the price of 29,990 INR.
It also uses the Quad Core processor by Qualcomm Snapdragon Pro which is clocked at the frequency of 1.5GHz and this is also supported by 2GB of RAM. This combination of hardware is also very much decent at this price.
Now the primary camera used at the back is of the 13MP and it also holds the capability of recording the Full HD video. The secondary camera used in the front of phone is VGA camera which is adequate enough for the video chatting.
The internal storage of this device is 8GB which can be extended up to 32GB with the help of microSD slot and this is usually the same in all phones irrespective of their prices. The operating system on this device with which it will be loaded is the Android v4.1 Jelly Bean.
The screen size has been reduced to 4.55 Inches and this display offers the resolution of 720 x 1280 pixels (HD Display) good enough for this screen size.
The water proofing feature will allow you to take this device underwater up to the depth of 150 meters for less than 30 minutes and the glass is shatter proof. So, this is really a robust phone and that too with good camera, clear display and decent processor to give you lag-less UI experience of Android.