Wow...nice and small. But I bought a DeLorme BlueLogger a few weeks back. It's advantage is that it's bluetooth capable....same logging capabilities. I hope GPSdrive will be improved enough where it's useful for street level on the 770. Right now I use with a laptop. Don't really like the software it came with...maybe I'll try to find something else. BlueLogger is not too big...it's about 2 pack of gum.