One Piece Rechargeable Hand Warmer, 10000mAhUSB Hand Warmer Power Bank Pocket Reusable Electric Hand Warmer with LED Display and Color Lighting(Black)-116*68*38mm. Long-lasting 10000mAh: 10000mAh is real capacity, not virtual capacity. And this hand warmer can also be used as a power bank. 3-speed adjustable, double-sided quick heating: This hand warmer is double-sided heating, it only takes 5 seconds to preheat. With 3 heating levels, 40°C (low)/50°C (medium)/60°C (high), you can freely choose the setting that suits you. LED Digital Display: This hand warmer has an LED display that shows the temperature and remaining power. Using high-tech aluminum and ABS materials, environmentally friendly polymer battery, shockproof, anti-scalding, anti-skid, explosion-proof. Surface Metallic Paint: The surface of this hand warmer is made of metallic paint. And easy to carry. Perfect for cold office work, cold classrooms, sleeping, shopping, dog walking, traveling, camping, hiking or any cold weather outdoor activity. 7 Colorful Lights: This hand warmer has 7 colorful breathing lights. Makes it practical and perfect as a gift. Super suitable for all ages and can be carried in a bag or pocket. Package: 1* Hand Warmer Size: 116*68*38mm Product material: aluminum alloy + ABS Product charging time: about 4 hours Input/Output: 5V/2A Heating power: 5-10W Product use time: low temperature: about 10 hours, high temperature: about 5 hours, constant temperature: about 6 hours Note: Due to the different pictures displayed, the actual color shall prevail. Dimensions are measured by hand, there may be errors (1-2 cm).