http://www.semsons.com/wigiwblgpsre.html You have to set it to 10Hz but that is the maximum update rate and it will output sentences at that rate. It can also do 2Hz and 4Hz and others. I just got it so I don't know much beyond the initial impressions. It has USB (as CDC acm serial). It takes a bit longer to get a cold cold first time fix. Manual and setup utility is a bit confusing - DO read the help for each page and/or the ONLINE manual for the setup. It claims it is waterproof, but I wouldn't immerse it. Surprisingly small (like the common sized ones that all use the same batteries but not as thick, nor long). I'll have more to report after a test-drive and some more analysis, but so far it looks good.