A little Christmas surprise: In every product we send out in the run-up to Christmas, you will find a beautiful Christmas card. We wish you a unique and merry Christmas! 3 Kinds Heating Level Mode: 3 kinds of heating level modes for you to select the suitable heat output as you need by simply pressing the power button on the hand muff. The first one is "High/Red", the second one is " Medium/Green", the last one is Low /Blue. You can press button for 3 seconds and turn red, then press the button again and turn white,press button once again and turn blue at last, press button for 5 second and turn off by itself. All-Around Warming for Cold Hands: USB port in the zipper pocket works with a 5V/2A power bank (not included) to generate heat and keep your hands warm. Durable and safe carbon fiber heating elements provide maximum warmth and cover the front and back sides of your hands while youre lying in wait for a deer, enduring freezing temperatures in your tree stand, or getting your hands wet out in a winter duck hunting. Warm and Comfortable: This electric heating hand warmer is made of superior water & wind-proof fabric and soft fleece lining, with flexible ribbed cuffs designed to keep you warm. It can be used normally even if in bad weather. Functional storage: Two practical zipper storage bags, the one on the front is a battery bag which can store batteries and adjust temperature. The zipper bag on the back can store mobile phones, wallets, paper handkerchiefs etc. Keeps your valuables extra secure. Ideal Gifts for Outdoor: In cold winter, normal activities without removing thick gloves. Such as hiking, photography, golf, hunting, ice-fishing, snow camping, playing football, snow plowing, flying drones and winter outdoor activities. Its advantage is that it is as convenient as a pocket, but the difference is that it can warm your hands faster. Perfect as birthday gift, thanksgiving gift and Christmas gift.