Features:
1) Backs up and duplicates the directory information in GSM and CDMA cell-phone card fast
2) Backs up capacity of device 8kB, can stores 250 group of telephone number originally
3) A unit operated, do not need connection with computer and using
4) After information backed up, cell-phone for instance, needn't afraid the directory information to lose
5) When users need to use different cell-phone cards because of different cities or countries, can share the backing up device information to any cell-phone cards
6) Even if the power is exhausted, will not lose the information that have already been in the spare device either
7) Three colors available: pink, green, blue