Features: 1) GSM SIM back-up tool 2) Easy to read the phonebook of SIM card and save to PC 3) Can write the phonebook saved in the PC to another new SIM card 4) Read, edit, backup telephone directory and SMS 5) Leisurely create, edit, backup mobile ring tones and pictures (only for Nokia phone) 6) Suitable for those who have several SIM cards to backup and modify information 7) Information safekeeping, set, cancel, manage mobile PIN password 8) Supports USB2.0 to read and write quickly 9) Beautiful contour, no extra power, plug and play USB port 10) System requirements: Windows 98, ME, 2000, XP