Feature: 1. Fast Heating: Instant heating is provided within seconds at the push of a button, ensuring fast heating when needed, convenient to use. 2. Adjustable Temperature: The electric hand warmer pouch has 3 heating settings up to 65°C, can adjust the temperature according to different needs, providing plenty of warmth for your hands in cold weather. 3. Safe Materials: This electric hand warmer cuff is made of premium materials, skinfriendly and durable materials, having a soft surface to keep warm and comfortable. 4. USB Port: This electric heated hand muff comes with a USB port that connects to a power bank for easy heating, can be used anywhere you want. 5. Waterproof Design: This electric hand warmer hunting pouch is made with a waterproof quilted cotton material that eliminates the worry of getting wet, ensuring safety and practicality in all conditions. Specification: Item Type: Electric Hand Warmer Pouch Material: Waterproof Cotton Fabric, Heating Pad Color: Leaf Pattern Lint Camouflage Color Size: Approx. 38 x 18cm / 14.96 x 7.09in Interface: USB Weight: Approx. 305g/10.76oz. Package List: 1 x Electric Hand Warmer Pouch 1 x Manual Note: 1. The main reasons why the product is not heated are as follows:First: the use of ambient temperature is too low, some people who are not sensitive to heat can not feel, mistakenly think that the product does not work.Second: the product is not protected by a washing bag during washing, resulting in damage to the internal heating sheet.Third: the ambient temperature is too low may cause the battery to fail to start, and the heating function cannot be used normally without power supply.Fourth: The battery does not support this product, and the charging bank used is not applicable.2. This is an outdoor product, and the ambient temperature has a great impact on the product, so it is difficult to determine the specific use temperature. The temperature sense varies from person to person, and the correct use according to the instructions can achieve the ideal effect.3. Charging treasure equipment requirements: the charging treasure output of 5V/2A can support the use of this product, but because the charging treasure market is very chaotic, some charging treasure will appear false mark situation, end customers do not have equipment to detect, so it may cause to the use of non matching can not achieve the ideal heating effect.