Three gear adjustable. The temperature is adjusted by the button on the outside of the heating handbag, long press the power button for 3 seconds, then you can adjust the temperature according to your needs, green is low range, blue is middle range, red is high grade.The fabric of this heated hand muff is Chunya spinning, pp cotton fabric, windproof and warm; inside is a fleece fabric, soft and skin-friendly, even if you do not open the heating system, the warmth is full.The entrance of the heated hand muff can firmly wrap your wrist, greatly prevent the winter cold wind; the adjustable neck design is durable, you can adjust the length you want, more easily use your heating gloves; the front and the back of this warm gloves each designed with a zip pocket, you can accommodate your power bank or mobile phone.The size of the heated hand muff 20*7.5in and just 0.66 pounds, you can take it to various outdoor sports like golf, soccer, hunting and more.This heated hand warmer is an ideal and warm gift for family members, friends, employees, and yourself, enjoy the outside activities,such as hunting, fishing, golf, football, and photography, where you will no longer need heavy winter gloves.