These brands of hand warmers are relatively safe:
1, rainbow hand warmer, rainbow hand warmer is an old brand in China, with double temperature control and double insurance, and it also has the characteristics of safety, explosion-proof and rapid heat storage. After charging for a few minutes, the temperature lasts for three hours, which is favored by everyone.
2, a few yuan hand warmers, which belong to digital hand warmers, can be heated in three seconds, with uniform heating, constant temperature on both sides, safe and explosion-proof, and can be charged by mobile power supply, which is more convenient.
3, purple rice hand warmers, using high-quality power batteries, but also joined the patented design, can be heated to a comfortable temperature of the human body, but also has independent temperature detection, more comfortable to use.
4, Jiabao hand warmers, using polymer chips, intelligent temperature control protection, there are three temperature modes, palm temperature can be customized according to demand.
5, butter cat hand warmers, through the back heating, the touch is very soft, with 4-speed temperature adjustment, constant in use, will not feel hot.
6, wood Dingding hand warmers, can be heated quickly in 5 seconds, without waiting, both sides are hot and evenly heated, which can bring comprehensive warmth.
7. Warm heart and hand, fast heating in three seconds, constant temperature for 24 hours, overshoot protection, safety and security.
8, Mu Anning hand warmer, which can heat for 4 to 6 hours, can also be charged with a mobile power pack, with the advantages of two-stage constant temperature and safety and explosion-proof.
9. My cabin hand warmer has the characteristics of long battery life, rapid warmth keeping, safety and explosion protection, and the temperature of two gears can be adjusted to meet different needs.
10, Yajia hand warmers, fast heating time, heating in 5 seconds, convenient charging, many choices, and long duration after filling.
These are the top ten brands of rechargeable hand warmers. You can refer to it and buy it according to actual needs.