OCOOPA Rechargeable Hand Warmer 10000mAh,Electric Hand Heater,Up to 14 Hours,USB Battery Operated Portable handwarmer, Warm Tech Gifts for Camping,Hiking,Hunting,Golf,Halo H01

Very pleased with this. Had it through two winters now. It gives a comforting radiant warmth and lasts a long time between charges. There are three heat settings and I usually use the lowest one.It's also useful in the summer as a powerbank for charging my phone.

I originally bought one of these excellent hand warmers a few years ago while I was still working, and I have to say my original is still functioning perfectly.However, as I'm now retired and I do more walking in the cold, I bought one of the new orange-coloured ones as a backup. It's so comforting to find this round warm thing in your pocket on a cold frosty day, and they seem to last for hours. You must remember to put them back on charge when you get home.I have to say that looking at the reviews of others, most folks do like this product, and if you suffer from Raynaud’s Syndrome like me and my daughter (cold white fingers) they are so lovely and warm to have in a pocket.Finally - the great thing about these devices is that they also have all the most popular USB ports, and with the correct USB cables can actually charge any iPhone and any Android device as well as warming your hands.

I have poor circulation and quickly lose feeling in my hands on a cold day. I have therefore used hand warmers for many years. Back 30 years this was a solid fuel (carbon) burning device, but for the last three or four years I have used a rechargeable electric warmer. This was an improvement on the solid fuel burner, but even when fully charged its warmth was intermittent, and the charge, even when fully charged overnight, ran out after two or three hours at best.The OCOOPA hand warmer is in a completely different class. It has a reassuring solidity and sits in the hand very comfortably (see image). I have used it twice now to play golf and once on a long walk. On each occasion, it maintained a constant temperature throughout. For both the golf rounds this was for over four hours continuously, and on the second occasion, because I wanted to test it, I had it turned up to the middle heat setting (of three), although I have found the lower setting perfectly adequate for most situations. Recharging after each of these occasions took remarkably little time, an hour at most, which suggests to me that the device had plenty of power remaining even after four or more hours use.It is very easy to use. The instructions are clear and easy to follow. The indicator lights are well designed and helpful. Unusually, it has ports for both a Micro and a USB C charger, and comes with the added bonus of a USB A port so that it can be used a a power ban for external devices.I have no hesitation or reservation in recommending this device.

I have one of the classic 5200mAh hand warmers and its served reasonably well, but for golf on cold days wanted one with longer battery life (would last ~2h 15m on highest setting).The H01 1000mAh is a noticeably bigger and seems to be hotter on highest heat setting. Would be nice if the heat plates wrapped around the side a bit more, but none the less good for heating my fingertips which get really cold. Overall I would recommend. It also is generally well packaged and made, and reasonably good value for money.The but's:- I got about 3.5Hrs on highest heat setting in 8-10 deg C ambient temp, still not enough for full round of golf.They claim "up to 8 hours on high setting", but thats @ 25 deg C!! Who would need to warm their hands when its 25 deg C? Besides, it's common practice to test devices at 20 deg C. Should be even lower for a device like this. So expect half of their figures in real-life use.- Not thats its a problem in my use case, but takes 10+ hours for full charge even from a high power output USB charge point (doesn't make any difference because the input charge rate is regulated to quite low value).- The power/level button should be better protected. I already found several times when putting it in my pocket or golf mitts that the button is easily knocked and changes the power level.

I am an older lady now but have suffered with Raynaud's since I was 19. Currently been having massive problems as we have been turning down the heating to watch the bills .... My fingers are turning numb and white on and off all day, but have now being turning grey and black with lack of blood supply - not good. I bought this little machine in desperation .... Now I don't know how I would live without it, and am back to buy a second one so I have cover when one is recharging. It is such a comfort not to have to worry about my fingers. I sit with this in my hands .... Sleep with it in my right hand (because that is my worst one) .... Take it out tucked inside a loose mitten .... And carry it everywhere with me. Three days of use .... Three days of no episodes while this is on. Fifteen hours? I have been getting 13-14 hours between charges. Heat level one is perfect - very, very occasionally it does suddenly get a little warmer for a few seconds but then resets almost immediately to its regular lovely warmth.