This listing is for one (1) plastic dog tag Medical Alert Drive that contains a 1GB USB flash drive The pendant is approximately 2.25 inches by 1 inch by 1/4 inch thick Pendant comes with at 25 inch ball chain One (1) software license is included with this drive Easy-to-use proprietary software allows you to enter, maintain and store all of your medical information including: Emergency contact info Insurance info Doctor contact info Medications Family history Easily stores digital copies of your scans and documents Much more Minimal typing required for information entry -- this software is designed to be very easy to use with check boxesand auto-fill date boxes. A little piece of technology, big peace of mind. Software notes: Your information will be stored on your drive as a .pdf file which can be read by nearly any computer. This software was written by a professional software development company and is certified to be safe and virus free. System requirements: Supported Operating Systems: Windows Server 2003; Windows Server 2008; Windows Vista; Windows XP, Windows 7 Processor: 400 MHz Pentium processor or equivalent (Minimum); 1 GHz Pentium processor or equivalent (Recommended) RAM: 128 MB Hard Disk: Up to 20 MB of available space may be required Display: 1024 x 768, 256 colors Internet Connection: Required for New Patient Registration and Product Updates Microsoft Windows Installer 3.1: Automatic installation from the Microsoft web site is offered during product installation if required. Microsoft .NET Framework 3.5: Automatic installation from the Microsoft web site is offered during product installation if required.