Lenovo S750 IP67 Waterproof Quad Core 4.5" Dual Sim Smartphone A660 update phone Lenovo S750 IP67 Waterproof Quad Core 4.5" Dual Sim Smartphone A660 update phone CPU : MTK 6589 Quad-core 1.2 GHz Memory: RAM 1GB , ROM 4GB Screen: 4.5" 540 x 960 qHD, 13 MP/ Auto Focus , LED flash Network: WCDMA /GSM ,Android OS, v4.2 (Jelly Bean), battery 2000 mAh