Feels good in my hands. Toasty warm.
I got these because my hands are always cold when the temps start to drop in the Fall. I liked the shape of these and that they also double as a power bank.The blue color is very pleasing. The warmers came about 50% charged and took about an hour to get to full charge, which aligns with their statement of 2-3 hours to a full charge.These warmers are heavier than my other pair, but that could be due to these also being a power bank.The shape fits great in my hand. These warmers feel like they’re more all-around heating because of their shape.What stands out from other warmers is that this one has four levels of heat versus three. I like the lower temp when my hands need just a little warmth. More versatile.I tested charging my Android phone, and it works. However, it is nearly impossible to get the USB plug into and out of the phone.The charging cable allows you to charge both warmers at the same time. Yeah, fewer cables! You can easily see the power and heat levels on the digital display. Plus, the chargers are magnetic and stay together, which is very helpful. You get two lanyards if you want to wear them around your wrist so you don’t drop them.I’m happy with these warmers. They will get a LOT of use this winter, both in my hands and for emergency phone charging.

Son loves them
So far working great. My 13 year old loves them. Uses them at outside sports events and when he is shoveling snow.

Amazing
Got them for husband who works outside and hunts! He loves them. They are almost hot. Will def order another pair

Decent rechargeable hand warmers with power bank bonus
I have never used rechargeable hand warmers before, but now that I’m temporarily living in a colder climate, I thought it would be a good idea to have some. I initially used them outside for a walk, but did not find that they worked well to keep my hands warm even at level 4. They warmed the palms of my hands but the tops of my hands remained cold, which for me is a weird sensation.Our heat went out last week, and we’ve been waiting for the repair company to show up, so it has been cold in the house for days (teens to 30s outside, ~60 inside). I decided to use the hand warmers again, but while sitting inside. Level 4 feels warmer inside maybe because it’s not having to heat me up as much as needed when outside.What I love about these hand warmers:* They have a display on each hand warmer that lets you know the battery life (percentage left) and the level (1-4).* They have lanyards so you can attach them to your wrists.* They are a comfortable size to hold or slip in a pocket (won’t weigh down the pocket or take up a lot of room).* They are magnetic, so you can “lock” them together for storage.* They double as individual power banks. Handy if you need to charge your phone or other electronics while on-the-go.Things I have noticed:* The level of warmth is dependent on where you are using them. Even though they are in my pockets, I feel more warmth when inside at 60 degrees Fahrenheit than when outside at 20-30 degrees Fahrenheit. Levels 1-3 do nothing for me. I’m a 50-something female.* When I put the two together using the magnet, then place it in my hoodie’s “kangaroo pocket,” I noticed much more warmth than when I used them separately in different pockets.* The battery life is not great. Within ten minutes of using them, the battery percentage dropped from 95 to 85, which concerned me. But the battery life dropped more slowly over the next two hours. After two hours of use on level 4, the battery life was at 50%. I expect to get 3-4 hours of use before needing to recharge. If you have a long power outage in cold weather or you’re out in the elements for a long timei, you’ll be out of luck if you cannot re-charge these.* Because there are magnets, it would be a good idea to keep them away from anything that might be demagnetized like hotel room key cards and credit cards.Overall, I’m happy with them although I wish they provided a bit more warmth.