A portable Amazon gadget has been branded ‘life changing’ and ‘genius’ by fans who swear they can no longer go without it when it’s cold outside. The Kternay Rechargeable Hand Warmers cost £14.99 for a pair and are designed to instantly warm your hands on chilly days – but shoppers were amazed to discover a hidden function.
The hand warmers also double up as a portable charger so you can also charge your phone while on the go. According to the makers, the reusable mini heaters warm up in just three seconds. They can be placed in your coat pockets to warm them up before you venture outdoors, or they fit comfortably in the palms of your hands.
Shoppers say the nifty gadgets are ideal for working outdoors, walking the dog or doing the school run. They feature three heat settings that you can control through a digital display and up to ten hours of battery life with each charge.
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The best-selling hand warmers have received positive reviews on the Amazon website, with many customers commenting on how impressed they were with the gadget’s heat function, even on the lowest setting. Omar said: “It has been freezing in the past few days in the UK. These hand warmers were a life saver.
“I work on the go and have had to be outside quite a lot … These warm up so fast! Three different settings for heat and despite it being 0 degrees outside, I only needed the lowest heat temp to warm up my hands. Brilliant.”
Zoe said: “Omg love these!!! Warm hands at last and a power bank too! I bought these as a gift for someone but I thought I’d get them out of the packaging and check they work etc before gifting them. I absolutely love them and I’ve already ordered another pair for myself.
“Very quick to set up just open the packaging, switch them on (they came charged) and within three seconds they are warm. You can choose between 40, 50 or 60 degree heat, pop them in your pockets put your hands in and bingo – warm hands.
“Absolutely brilliant for walking/being outside/standing around on the school run etc and an added bonus that I hadn’t realised is that you can use them as a power bank to charge your phone instead of a heater if you need to!”
A few people complained that the hand warmers didn’t stay warm for as long as advertised, while others said they stayed warm for hours and charged up quickly. One person wrote: “A genius product!
“I was looking for a new mobile power bank and found these gems. My old power bank is massive and very heavy, whereas these are light and small. I’d say they’re pocket sized and would be easy to carry around. I absolutely love that they’re also dual use and double up as little hand warmers!”
Another five-star reviewer, Matt, described the chargers as a ‘life saver’ on Sunday mornings while he’s watching his daughter’s football matches, while Joseph said: “Great lil heater and it’s amusing to have on the go.
“It heats up fast and last reasonably long, though I haven’t been able to figure out how long a single charge goes for because I have it on and off at various times so hard to keep track but seems to last long. It charges fast as well from power bank on the go.”
Amazon shoppers can buy the Kternay Rechargeable Hand Warmers in a pair for £14.99 online. Alternatively, Boots sells single-use HoyHands Hand Warmers for just £1 for a two-pack.
Jessica Irvine is a tech enthusiast specializing in gadgets. From smart home devices to cutting-edge electronics, Jessica explores the world of consumer tech, offering readers comprehensive reviews, hands-on experiences, and expert insights into the coolest and most innovative gadgets on the market.