Karecel Hand Warmers Rechargeable, USB Hand Warmer Reusable 5200mAh Powerbank Portable Heater Battery Hot Pocket Warmer Electric Handwarmers, Great Gifts for Men and Women in Cold Wether Winter

My husband has had to go through chemotherapy several times for colon cancer and he likes to hunt in the fall. However, when he's on chemo his hands cannot stand the cold as they get way more sensitive to the cold. These really help hi to keep his hands warm. His sister bought him one, he lost it, so I bought him one. Then he found the first one so now he has two. They also come in very handy when I do feeding chores in the winter months.

This is an excellent gadget. Saw friends with it. My husband has frostbite on one finger and his hand always gets cold. This little portable , rechargeable warmer does the trick. HE LOVES IT. Great to use outdoors and indoors, charge lasts a long time. It’s great that it quickly recharges with a computer plug. 4 settings to adjust to needed temp.. it’s more attractive than the others also.

Love love love these. I have Raynaud's disease- so my fingers always get cold. Great to hold-great to put in pocket. Get super hot! Easy to charge and use again!!

BACKGROUND INFO: I charged this product as soon as I received it to use the next day. I was using it the very next morning and there was a brief moment where it just turned itself off. After about 8 seconds, it turned itself back on. Slightly worried, I messaged KareCel about safety concerns, and they responded within 12 hours assuring me that everything was fine and they sent me another one without me asking completely free of charge! I've been using this hand warmer for two weeks now, and that initial shut-off glitch hasn't occurred ever since.BATTERY: The battery life is alright; I'm estimating around just a little above 2 hours over multiple days throughout the week. I wish it lasted longer. I guess generating heat pretty quickly takes a lot of energy if you think about it. It takes over 3 hours to charge. I tried to watch it while I'm charging it at night to see when the charging indicators are all full, but I get home pretty late and go to sleep fairly early. The manual states that the 3 lights indicate the battery life in 33% segments (1 light = 1-33%, 2 lights = 34-66%, 3 lights = 67-100%), but it usually drops to 2 lights after the first 10 minutes of use. The indicator isn't really reliable, but at least you'll know you'll have to charge it soon when it sits at 1 light for a while.HEAT: I've read other reviews that say this product gets really hot, but I think it's all relative. I will say that it produces a sufficient amount of heat that doesn't hurt but completely warms my hand. I alternative hands in about 10-second splits, and they're completely warm before 15 minutes. There are also 3 levels of heat; the heat indicator is red (unlike the blue light I failed to mention above) and stays lit while it's on. I honestly can't feel the difference between the heat levels; when your hands get warm, it's pretty difficult to tell the difference between the different settings. However, I assume more energy is being used at the highest heat level. That being said, my big-brain strategy is to start at the highest heat level for minute 1, drop it to the middle heat level for minutes 2-3, and switch to the lowest heat level for the remainder of the time! Regarding how long it takes to heat up, you can start feeling it after about 15-30 seconds depending on the ambient temperature.AESTHETICS/FEEL: Honestly, the product looks pretty cool. I ordered the black one, but it appears that all of them come with the light-blue-colored, felt-material carrying case. The texture is as expected; the heated part feels like a grip-y silicon, and the white part is just smooth plastic. The weight of the product makes it feel like a high-quality product.SUGGESTIONS: It'd be great if the battery life indicator was actually proportional in size, but it's not really a deal-breaker. My second suggestion is probably asking for a bit much, but a mechanism that stops the product from charging would be nice when it hits full charge. Of course, having that feature implemented would probably push the cost up. My final suggestion would be to have the case color match the product color. XDCONCLUSION: The product itself met my expectations for the most part; it keeps my hands warm. (I've used it in temperatures ranging from 37-55 °F so far.) I docked a star off just for the overall characteristics of the battery that I mentioned above. The customer service far exceeded my expectations. While their English wasn't perfect, the response time and quality of the response was phenomenal. The first response was within 9 hours, the next response within 6, and the successive responses after that were within minutes.

This warms my hands really good, maintains a charge and the battery lasts really well so that I can charge my device for three days. This works so well that I bought one for my daughter and had to buy two more for my other daughters.

My office is freezing all the time but we aren’t allowed to bring in space heaters! But luckily this helps so much!

I was recently diagnosed itn Raynauld's syndrome and my fingers get cold easily, even inside. They then turn white and I need to warm them up. I was using warm water to try to warm them up, but that didn't work quick enough, and wearing gloves inside was not always practical. I had found another device and ordered it. It seems to do a good job but took forever to charge and the charge didn't last very long. Found this gem and I have to say I wish I had found it sooner. Doesn't take that long to charge, holds the charge for many uses, and really heats up. I hear it to the hottest setting then turn it down once my fingers start to warm up and regain their color. Then I use it on either the lowest or middle setting to keep my fingers warm . It has really been a life saver. I highly recommend this gem! In fact I may order another so I can have one for each hand.

These are inexpensive hand warmers. They heat up quickly and do provide substantial warmth. The only problem is that they have relatively short battery life, only working for a few hours. I use mine to warm my arthritic hands before exercising and it works well for this.