1.The backup device is in accordance with ISO/IEC 7816-3,GSM 11.11 andGSM 11.12? standard
2.Volume: 8KB(250 telephone directory records, each record length is 15 letters limited for name, and 20digit limited for phone number).Support 8K,16K,32K
according to different choice
3.Device independent, no PC or PDA required
4.Dont worry losing information when mobile phone lost
5.Dont worry losing information when out of power. The information can be? saved in backup device about 3 years
6.Read name and telephone number, with calendar function