... Cell Phone 1.GSM Compatibility:Frequencies 850MHz, 900MHz, 1800MHz, 1900MHz Carbon Slider Dual SIM China Keyboard Cell PhonePrimary Function: 2.25 ... on use) Talk Time approx: 4-5 hours Battery Charge Time approx: 3 hours Battery Type: Rechargeable Li-ion (1580 mAh) Menu ... - Call History, Caller ID, Call Waiting, Call Divert, Call Barring, Black List, Auto Redial, Speed Dial, IP Dial, Call Time Display ...