inputs.text: cheap really good product - gps 2 days use blackberry storm pc really happy purchase configuration gps storm bit tricky need good software mgmaps works well issues softwares bluetooth link works well without connection drops issues sometimes start blackberry cannot connect gps power offon gps good charge time 1 hour 12 hours constructor use used train precisiontrack really good except altitude use really usb cap not hard open absolutely not need needle agps mode5hz supported software package available website constructor easy use need figure com port gps connected