This keychain is new, comes with a USB cable and rechargeable batteries, and has many useful functions. It tells time, has a calendar, can store a to-do and a shopping list, and has a phonebook. It has a few system requirements such as - Windows 200/XP/Vista, Pentium 4 Processor or equivalent, 128 MB of RAM, 50 MB of free hard disk storage, and a CD-ROM Drive. The package measures 9 1/2 inches high and 6 3/4 inches wide. This keychain is a timesaver and would make a great gift.