inputs.text: great - using dg200 week nowjust trying see works car walking inside buildings amazingly good purchased unit supplehement new highend point shoot camera extrehemely poor gps performance compared cell phone initially tied several gps logging apps galaxy s4with unacceptable results learned dg200 far not use enclosed cdthere uptodate program globalsat website no need install usb driver unit detected drivers installed windows 7 program permits setting recording parameters time distance altitude units example set mine record every 30 seconds conditions nearly 6 days continuous recording mehemory 13 full unit uses native file format gsr data files saved gpx csv kml file imported automatically plotted google mapthe display not automatically centered trackjust move map program poorly documented experimentation required discover features unit extrehemely small lightweight easy carried lanyard shirt without notice unit standard miniusb connector charges usb power source far pleased wish never purchased camera