Hands down one of the best pieces of equipment I own. I use the camo jacket for work and play. Have had it for 2 years with no issues all. One battery will last most of the day if you use it as I do, off during hiking, on during stand. With our weather 40 to -40 its a must have for me.
It has three levels of heat with a cool LED button to show you what level you are on. Its hidden inside the jacket on the camo version.
My only gripe is the placement of the battery. I wish it was in the hand pocket not on the side (about the 7 oclock position.
Well worth the money.