This is a half eaten 6x6 round bale of hay. I baled it July 3 2013. 3 days after I misplaced my Provari. [/URL][/IMG] This is where the cows found it for me. Inside dark hole in first pic. [/URL][/IMG] removed broke off carto threads, installed battery from Provari I was vaping at the time. And ,,, [/URL]Dropped in pasture, hay raked twice, wind rowed, possibly ran over by tractor / implements 3 - 4 times, went through baling machine, bale spiked and moved several times, sat outside in all sorts weather conditions since July 2013. The battery was dead / 2.4v, Ibtank didn't survive, Provari still functions like the day it was new / flawlessly. Priceless.