LG has extended its collection of smartphones by officially announcing the Optimus GJ in Taiwan. The Optimus GJ is an upgraded version of the popular LG Optimus G with water and dust resistance. The new smartphone can withstand 1 meter of water for 30 minutes

The specifications of the Optimus GJ are quite similar to Optimus G with the device sporting a 4.7-inch display of 720p resolution. The Optimug GJ is powered by a Snapdragon S4 Pro chipset with a quad-core 1.5 GHz processor along with 2 GB of RAM.

The device features a 13 megapixel rear camera, 1.3 megapixel front facing snapper and 16 GB of internal memory. It runs Android 4.1.2 Jelly Bean out of box and is powered by a 2,280 mAh battery.

LG Optimus GJ will compete against the likes of Sony Xperia Z and Xperia ZR. The Optimus GJ is currently available in Taiwan and is priced at TWD17,990 (about $602). Unfortunately, there is no word on the global availability of the smartphone as of now.