Features:  Common functions, like Redial, Hands-free, Caller ID, Call waiting, Call forwarding, Call transfer  Phonebook feature  High-Speed internet surfing  SMS function  A phonebook with large volume: 150 column (can save 3 numbers per column) 20recieved /20dialed /20missed call records  Polyphonic ring with 10 melodies and 6 level volume adjustable  Scheduler, stopwatch, and alarm functions  128x64 LCD display with status indicators  Incoming call reminder  Dipole antenna, strong signals and perfect voice with high gain antenna  Large capacity battery  Compatible with two authentication modes: R-UIM and NAM  Speed dialing  Support all additional data services which are supplied by Network Operator Technical Specification:  1.Environmental Conditions:  Environmental Temperature: －10℃～＋45℃；  Relative Humidity: 10％～95％；  Atmosphere pressure: 86～106Kpa；  Environmental noise: ≦60dB  2．Technical Standards:  Operation frequency: TX：824～849MHz；  RX：869～894 MHz；  Air Interface Standard: CDMA2000 1X  Maximum output power: 2W  Output dynamic range: 62dB  Receiving sensitivity: <104dBM  Power Supply: AC220V 50Hz；  Backup Power supply: 3.6V/1800mAH；  Backup chargeable battery: Standby time: >24 hours, talk time : > 4 hour