Indian mobile devices brand, Xolo, has launched its first Windows Phone-powered smartphone Win Q900s in the Indian market at Rs 11,999. However, the device, which is among the lightest smartphones (100gm) in the world, is available at an special introductory offer price of Rs 9,999 with online retailer Snapdeal. The dual-SIM smartphone is powered by 1.2GHz quad-core Qualcomm Snapdragon processor.