inputs.text: receiver droid x - got droid x use car running track days unit connected without problehems app designed work bluetooth gps receivers trackaroo logging gps app turned 20 hours actively connected 4 5 hours charge not think needed accuracy seehemed pretty good especially compared builtin receiver set use 5 hz refresh rate got looks pretty good data not calibrated track timing could see details like slight acceleration lapses changed gears pleased worked thing would liked better way fix car rubber pad back obviously not good enough hard driving able put velcro strip rubber pad stick dash adhesive not stick well rubber