Do your research first - Garmin GPSMAP 66i Handheld GPS

I cant believe this has been released by garmin. What a pos. The screen resolution is horrible, about as good as a 10 year old flip phone. Satellite images are completely unrecognizable in known terrain. If you are used to looking at google maps satellite views on your phone, this garmin unit is going to be extremely disappointing. IT DOES NOT COME LOADED WITH BIRDSEYE. You need to manually select and download a 2sq mile(or less)section one at a time to the devices internal storage. The software is constantly freezing,and unreliable. Purchased maps cannot be viewed on your cell phone , only on a pc if it has garmin software installed AND IS PHYSICALLY PLUGGED INTO THE GARMIN UNIT. So planning and reviewing trails is not possible without the unit in hand, even after spending $100s on additional maps. There is no online support for the 66i. It is phone only, call in automated systems and wait for a tech to return your call. The weather features are not available unless you're synced to a cell phone and have full cellular service. Which is absolutely stupid, why bother with the Garmin if cellular is available? Real world battery life is 8-12 hours, controls are counterintuitive and erasing data is frightening, easily done accidentally. Want to lose your trail back to camp? Me neither. Most of the included apps are useless and belong in a fitness device, not a gps unit. I do not have one positive thing to say about Garmin. I highly recommend getting a sat phone vs trusting the 66i. The purchase price is 600,and you must have a credit card on file even if you are not using the unit, it is still $5 a month just to own it. by the time you purchase ONE MAP, a case, belt clip, monthly subscription, annual usage fee, you are into it $800 for a satellite linked flip phone/pager equivalent. Garbage.