Features: 1) Windows 2000/XP/Me, no need to install driver 2) USB connector to PC, support USB 1.1 3) LED indicator light 4) Working power supply: 5V DC (supplied by computer through USB port) 5) Save phone book and SMS messages. The operating system supports display phone book as well as SMS message in both Chinese and English. You may also add or edit the records in SIM cards freely Retail package includes: 1) SIM card reader 2) CD-ROM driver 3) User manual System requirements: 1) WINDOWS2000/XP/Me 2) Available USB port 3) CD-ROM drive Packing: Gift box