Hi all!

I've seen an explosion in the number of people carrying these fitbit devices.

I'm really curious to see how they work (do they use GPS, require cell reception, drain a phone battery), how long they last, and how effective they are at keeping track of distance/heart rate etc.

I'm doing an 8-day trip and I'm curious to see how many calories I will burn, distance, elevation gain. I'm wondering if there is a fitbut model that can link to my samsung galaxy 3s (which will be on airplane mode as I hike).

Thanks wonderful mountaineering community!


@jjoshuagregory (Instagram) for mainly landscape and mountain pics