Specification: This product is not only a small hand warmer, but also has an emergency backup battery for your use. Since this mini hand warmer is small and lightweight, it is comfortable to hold and easy to carry when you are outdoors. Made of aluminum alloy and ABS material, this hand warmer is durable. This product is 13cm long, 8cm wide and 3cm thick. Perfect for winter use, it can be used as a double-sided heated hand warmer. Product name: Electric hand warmerMaterial: ABSFeatures: cute, reusable, portableInput voltage: 5VRated current: 2ABattery capacity: 5200mAhSize Details: Dimensions: 13cm x 8cm x 3cm/5.12" x 3.15" x 1.18" (approx.) notes: Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Please allow slight size differences due to different manual measurements. Package includes: 1 x Electric Hand Warmer 1 x charging cable Keywords: heater, hand warmer, portable battery, power saving hand warmer