Sony Ericsson S312 Dimensions: 3.94 x 1.81 x 0.49 inches (100 x 46 x 12.5 mm); Weight: 2.82 oz (80 g)the average is 4.8 oz (138 g); Design features: Numeric keypad, Soft keys (2); Side Keys: Right: Volume control, Camera shutter, Multimedia control; Colors: Blue, ...