BoneView Electric Hand Warmer Emergency Power Bank with Flashlight – Portable Rechargeable 9900-mAh Battery Pack, Fast Heating Over 8 Hr, Hunting, Fishing, Survival, Camping Gadgets for Men & Women

Generates more heat than the chemical warmers.
This hand warmer works amazingly well. The low setting puts out a low level of heat that’s great for early/mid fall. The high setting generates a great deal of heat that is perfect for all winter, especially when used inside a hand muff pack. The only thing I can compare the low setting to are the individual packets of hot hands. The high setting on this gets really hot, not hot enough to burn you, but you will really feel it!This also works really well as a body heater. I have a fleece zip up that I wear most of the hunting season as my second layer, it has a chest pocket which you’re supposed to use for your phone, however, placing this hand warmer inside that pocket instead will generate a great deal of heat to be trapped inside that layer.The flashlight is a great addition if you need light quick and don’t want to fumble with getting your head lamp back out of your pack. It’s not incredibly bright that it will spook your game away, but it’s not too dim that you can’t see what you’re doing.Although I have not used the portable battery portion of this device in the field under actual conditions, I have tested it at home. While it does take much longer to charge my phone, it still gets the job done. I can definitely see this being useful if you plan to hunt all day long and realize your phone is almost dead. It will charge it up over a few hours.

Not bad, but not my overall winner
Okay so this works fine, and makes decent heat. The flashlight is pretty bad, but your buying it for heat, and to get hot. It does get hot, and seems pretty well built. The slider switch is not bad, and is less likely to get accidently touched in a pocket or by handling. The silver metal area has fairly even heat, the top and bottom not so much, which is good and bad. Easier to hold when on high, since you can touch top or bottom and it’s cool.My goal was 15, mostly for gifts, and around $10 each. This one, from the sample of one that I bought was reliable. I ended up ordering a bunch of the all different brands of basically the same heater you see lots of. However those are spooty, some worked excellent and some not so good. I think I found a good one, but who knows till I try them, one of the $10 ones was not good, so will find out soon if the others I ordered are good or not.

Game changer
I got one of these for Xmas 2023 and field tested it in the goose pit on a cold day on the Eastern Shore. it almost didn’t make it back; the other guys in the pit wanted to steal it. To prevent theft,I bought 10 more and gave one to each of the members of my goose group (and one for the guide). This morning it was in the upper teens with strong wind and blowing snow. Everyone in the pit brought theirs, fully charged, and really appreciated having them. One word of caution, the bulk of the thing is battery, it’s not like a cell phone that will charge in a couple hours. It takes 4-5 hours to fully charge these things, so charge them up the night before using them on a cold day. Don’t think you can fully charge them with the car charger on the way to the hunt.

Great Product
I have bought three of these. It’s amazing to have one thing that does three things that I often need. As a hand warmer these things are great. The battery life is a lot longer than what I thought it would be. So far I have yet to run out of warmth before I came back in. The flashlight is great at night for walking the dog or putting a key in a lock. And I can get about 2 1/2 or three charges for my old Samsung S-4 cell phone. These are so useful, but I’m going to be mine several more to give as gifts.