COOL PRODUCT! GPS the size of a Coke bottle. Use it by itself, static, just push the button and record a session. Use it on a network. Use two unit as an RTK system. Free Topcon/Sokkia Utility software lets you copy your static files from the receiver to your computer. Be the most mobile and productive with Topcon Enterprise software. It will update your files in the office while you are still in the field.