I am not that Brave.. I put 13.6... and mine is 12.6.. Garmin 770LMTHD.

I did this 2 months ago.. a Re-manufactured Garmin 770... hundred dollars off and same 1 year warranty.. go to Garmin website for details on this..
but it does arrive in a plain white box but all accessories are there and new.
unit Looks new, no marks or scratches.. $300 to my door.

p.m. me if you want the vender.. in USA.