Model number:KT1000(181)White color:Black color1.GSM FWP for standard Voice,Website: , SMS, GPRS, contacts2. 850/900/1800/1900MHz 3. Optional rings, Power On/Off.Basic Features 1. External Antenna 2. Large 128*64 Dot-Matrix Graphic LCD 3. ABS keys 4. Yellow-Green LCD Back-light 5. Speaker Phone for Ringing and Hand-Free Mode 6. 23 Keys with On/Off Key 7. Alarm Clock 8. 2 shortcut keys, SMS and redial 9. Two-Way SMS Messaging 10. Adapter AC Input : 100 ~ 240 VAC, 50~60Hz 11. Adapter DC Output : 5VDC @500mA 12. Battery Capacity : 3.7V/600mAh Li+ Battery (optional) 13. Weight : 0.457kg 14. Dimensions:182mm×188mm×73.5mmCall Features 1. High performance hands free call 2. Emergency Call 3. Caller ID 4. Call Waiting, Forwarding, 3-Way CallingSMS Features 1. Mass SMS(50pcs+)Phonebook Features 1. Quick Look in Phonebook 2.Mass phonebook(300pcs+)Call History 1. Incoming Calls (20pcs) 2. Outgoing Calls (20pcs) 3. Missed Calls (20pcs)Battery features 1. Standby time: 120 hours 2. Talking time: 3.0 hours 3. Charging time:``lt''8 hoursLock Features optional 1. Lock Card 2. Lock Phone 3. Lock NetPolyphonic Ringtones 1. Support polyphonic ring 2. Support ring selection and settings 3. Support incoming call volume adjustmentSelectable Features 1. Desktop type 2. Languages: English, Chinese, or others 3. Casing Colors: White BlackAppearance Gallery:Technical SpecificationsItemsParametersMax output power33dbm±2db@900MHz 30dbm±2db@1800MHzCarrier Spacing200KHzWorking FrequencyGSM 900MHz/1800MHz (GSM850/900/1800/1900MHz optional)Receiver Sensitivity``lt''-104dBm-104dbm