Product review (3 stars): Fragile battery wire.
Unit gives me great data but there is a battery lead wire that is easily broken.  When removing or replacing the battery you must be super cautious not to snag the black battery wire.  The battery also tends to drag on the wire and sliding the two halves of the unit to their mated position can strip the insulation from the wire.  Seems like they didn't leave enough room for the wires nor route them well.