Samsung E1310M, Clamshell, 1.77", 128 x 160 pixels, Bluetooth, 800 mAh, Black Samsung E1310M. Form factor: Clamshell. Display diagonal: 1.77", Display resolution: 128 x 160 pixels. Bluetooth. FM radio. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 800 mAh, Standby time (2G): 450 h. Weight: 2.93 oz (83 g). Product color: Black