Expanding its X series smartphone portfolio, Gionee India on Tuesday launched 'X1s' which will be available in India for Rs 12,999, starting September 21.'X1s' sports 13MP rear camera and 16MP selfie camera with flash and is equipped with 4000mAh battery."By launching Gionee X1s, we aim to offer our consumers with an outstanding confluence of advanced technology accompanied with enhanced selfie plus battery capabilities," said Alok Shrivastava, Director, Business Intelligence and Planning, Gionee, in a statement.The smartphone comes with 3GB RAM and 16GB internal storage which is expandable up to 256GB using microSD card.It features 5.2-inch HD IPS display with Gorilla glass 3 and has fingerprint sensor which unlocks it within 0.3 seconds.Powered by 1.5GHz Quad-core processor, the device runs on Android 7.0 OS.