Golden Software SURFER 11 single license, GPS- Module, USB adapter cable for data transfer, USB-Stick with Lorenz Data Converter Software. This kit was made for use with the DEEPMAX Z1 built-in data logger function. To generate colour maps an additional computer with following system requirements would also be necessary, but not included with this kit: Windows XP SP2 or higher; Vista; 7; (Trade Mark of Microsoft), 1GB RAM, 100MB free hard disk space, 1024x768 or higher monitor resolution with a minimum 16-bit colour depth