Fast refresh makes it great for track-day events! Rock solid reliable.
8 April 2015
Summary: I use my Q818XT with Trackmaster software on several android phones to log speed/position data when I attend track day events at road courses throughout the south. I have had my Q818XT for over two years and it that time it has work flawlessly.
Summary: Got this to pair with Harry's Lap Timer for my HPDE events and it gets the job done! Road Atlanta has horrible signal for the standard in-phone GPS, so this external module is a must. No issues, easy to pair and works as expected.
Summary: Small, Very Accurate Bluetooth GPS. I use this with my tablet and did use it with my phone, before I bought my extremely accurate S5. Even so, I use this with my phone for long hikes, to save on battery power of the phone.