iBall on Monday launched its 3G voice calling enabled tablet 'Slide O900-C' in India, priced at Rs 12,999. The dual-SIM device has a 7.85-inch display and 5MP front and rear camera. It is powered by a 1.7GHz octa-core processor coupled with a 2GB RAM. The tablet will be available for purchase in the market within 2 weeks, the company said.