Mumbai-based electronics company iBall on Monday launched its new smartphone Cobalt Oomph 4.7D in India priced at Rs 7,999. The 4.7-inch HD display device is powered by a 1.3 GHz quad-core Cortex A7 processor coupled with a 1GB RAM. The dual-SIM smartphone sports an 8MP rear camera with LED flash, a 5MP selfie camera along with 8GB internal storage.