Specifications: Not only a little hand warmer, this product but also an emergency backup battery for you to use. Because this mini hand warmer is compact and lightweight, it is comfortable for you to hold and convenient for you to carry around during outdoor. Made with aluminum alloy and ABS material, this hand warmer is durable for long time used. The length of this product is 13cm, width is 8cm and thickness is 3cm. It is suitable for winter as it can be used as a double-side heating hand warmer. Item Name: Electric Hand Warmer Material: ABS Features: Cute, Reusable, Portable Input Voltage: 5V Rated Current: 2A Battery Capacity: 5200mAh Size Details: Size: 13cm x 8cm x 3cm/5.12" x 3.15" x 1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Electric Hand Warmer 1 x Charging Cable