Description Features: 1. Double Side: double-sided heating, you can choose that best temperature according to your needs, even in that cold days can also make your hands stay warm. 2. High Quality Material: Our hand warmer it made of plastic material and Eco-friendly lithium battery, safest Hand Warmer ever. 3. Portable Design: Designed as a portable double-side heating, this hand-sized hand warmer is silicone corner protection anti drop.perfect fits your hands and pockets. 4. Perfect Winter Gift: Its must have a hand warmer to spend cold winter, especially for raynauds, arthritis, muscule pain sufferers for heat therapy needs. This device keeps your hands warm on cold days. 5. Safety and explosion-proof: automatic power off to prevent overcharge / isolation between heating plate and warm hand treasure to prevent short circuit and explosion. IC chip and battery pack are suitable for protecting core explosion-proof links. Descriptions: 2-in-1 hand warmer, can also be used as a mobile power to charge your cell phone, can be carried in one hand, or in a pocket, can be used to warm hands, feet, knees, belly. You can carry it with you during sports, fishing, hiking, camping, skiing, traveling or outdoor sports. Specifications: Material: plastic Color: rose gold, champagne gold, silver, blue(optional) Size: 102x59mm Battery: 2000MAH Temperature: 40-60 degrees Package Included: 1 x Hand Warmer 1 x Cable 1 x User Manual Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.