OCOOPA Magnetic Hand Warmers Rechargeable 2 Pack, Electric Handwarmers, Smart Heating UL Certified, 3-Settings,Portable Heater, Ultra Slim Pocket, Hunting Essentials, Gifts for…

Great product! Compact, and generate a lot of heat, even on the first setting of three. Easily fit inside gloves, mittens or pockets.

Works well but battery doesn’t last as long as advertised . It does recharge quick and easy. Great size for the pockets and nice little straps for around your wrists. I use these for my 90 year old mom whose hands are always cold. They are priced cheap enough that we have three pairs so she’s never without. 😂She loves them.

We live on extensive rural acreage within a great lakes snowbelt. Every winter we go through many pairs of bagged granular hand warmers. With our active outdoor life, the bags are sometimes damaged enough to leak contents and when Ziploc-stored to extend use, there’s no way to tell one bag from another or how much ‘heat life’ is left.
So I tried the OCOOPA UT3 light rechargeable electric warmers.
At first, I had problems understanding the very skimy User’s Manual – and I emailed OCOOPA customer service, asking for help understanding button function and operation. They responded promptly with detailed instruction well written.
In the interim, I was able to comprehend operation after viewing a YouTube video review.
My first field trial of the UT3 was in an unheated (below freezing) hunting blind, wearing gloves. I set the heat on ‘high’ (three red lights) and soon found it to be warmer than necessary. I switched to ‘medium’ heat, and found that too was more than I needed, despite the frosty atmosphere.
The heaters actually kept my gloved hands perfectly warm on ‘low’ heat setting. Without the gloves, the ‘mid’ setting was enough. And I would assume that working with icy-gripped equipment (i.e. Snowblowing), the ‘high’ setting would work fine. Recharging (blinking blue light) and battery checking is easy.
In sum, these hand warmers exceeded my expectations.
They are far better (read: warmer, more durable, easily checked, rechargeable, inexpensive/use) than the granular-filled heaters.
And the service response was clear and prompt. – The Duffian

カイロ、要る？？ってずっと思ってた。が、日常使いに大正解。
スノボ行く時ぐらいしか使わないし、普段手袋も使ってないけど、これ買ったら、あー、こんなに手が暖かいって幸せなんだなって思えた。
すぐあたたまるし、暑すぎない。ただ、両面じゃないからぽっかぽかになりたい人は注意。私にはちょうど良かった。

This little device helped me tremendously during a long three day backpacking. It helped me stay warm at night. It kept running a whole night and a half. It is also easy to recharge. Fits perfectly in your palm as you sleep.
They can get pretty warm, so I did wear gloves while I held onto them.

I am amazed at how well these work. Even at the lowest setting they provide even heat. The mid level is heat is more than adequate even if you use light weight gloves. Battery holds power for hours at a time. Great product and value.

These have 3 levels of heat. On low they have plenty of heat. I don’t live in a frigid climate but I suppose you would use the higher heat levels with heavy gloves on. I ran these for a day on low and they lasted the entire day. More than 8 hours. They have what I describe as pulsating heat. They have red leds to let you know what level they are set to. 3 levels. Press and hold to turn on/off. Double click the button to show battery level in blue light. Charging is usb-c. Blue lights flash when charging and solid when done. Heat comes from top side only. Back sides have magnets so you can put them together. However the magnets are not really that strong. They also come with a lanyard.

They work really well. Warmth on level 1 is pretty good for most situations. Level 2 is good when extra cold or windy out. I have not needed level 3. Battery life is decent for being a heating unit. The first one or two charge cycles didn’t last as long but the battery has been great since. Still need a backup, like the iron oxidation packs, if you are outside for extended periods. The size and curvature fit my hands well (For reference, large size nitrile gloves and most regular gloves fit snug & smooth on my hands). To warm my whole hand I prefer holding the pair in one hand (they only heat on one side). I liked these enough that I bought a second pair for my other hand. I also bought my neighbor a pair, and spare pairs for my wife & hunting bag. Watch the price for a while. First pair was 30+ bucks, but the rest I caught on big discount that was almost half price.

It works really well! Served us well on our vacation in London and Scotland in Dec and Jan. Starts functioning in a couple of seconds and works for hours. Great product!

It works really well! Served us well on our vacation in London and Scotland in Dec and Jan. Starts functioning in a couple of seconds and works for hours. Great product!

Must need for traveling in cold. Battery lasts a long time. They come pre-charged. They come with a wrist strap which makes them easier to carry and versatile. Good durability.
They have different heat settings in case the hot is too hot.

I’ve been using these OCOOPA hand warmers for a little while now, and overall I really like them. They definitely get hot — I’d guess close to the 125°F they advertise — and that temperature is perfect for actually warming your hands. As someone with mild Raynaud’s, the heat really does make a difference, and these offer quick relief when my fingers start to go cold.

The downsides are mostly around practicality. The battery life is fine, but the charge time feels slow. When I run them on high, it seems like they take almost as long to recharge as they last. The included Y-shaped charging cable was a nice idea in theory, but one of the two output ends on mine didn’t work at all, so I ended up charging one side at a time anyway.

OCOOPA’s model system could also be clearer. The numbers (3, 4, etc.) feel random — if the “4” is supposed to be better than the “3,” I really can’t tell how based on their descriptions. On top of that, the sizing isn’t consistent: some models list measurements in centimeters and others in inches. It makes comparison way harder than it should be. For larger hands, these are on the small side. They still help, but they don’t fill your palm the way I’d like.

I also ordered another OCOOPA model with heat on both sides and I prefer that one. Its a nice feature that warms more evenly and works just as well overall. I’d recommend a 2-sided model if you’re deciding between the two. One major downside of both models is the size. Yes, small makes them portable and easy to fit in your pocket, but these do not work great for people with large hands.

Still, the heat output and reliability make this a solid 4-star pick — great for cold hands and Raynaud’s, with room for improvement in design and charging.