Features: Automatically detect and adjust the charge and discharge voltage and current, truly protect the user's safety. Comfortable, non irritating sleeve wrist, which can be hanging on the bag, cabinet, etc.The mini body shape makes it easier to put the hand warmer in your pocket. Equipped with special lithium ion protection board to effectively prevent overcharge, over discharge, over current, short circuit, etc. Power output using USB port, plug in the data cable to achieve portable, charging at any time. The cute cartoon animal shape is a portable and small hand warmer to warm your whole winter. brand new and high quality Package Includes: 1PC x Electric Hand Warmer Specifications: Type: Electric Hand Warmer Material: ABS + Aluminum alloy + Silicone Applications: Winter Indoor Outdoor Features: Electric Hand Warmer, Cute Cartoon, Double-Side Heating, Portable Heater Appliance Size: approx. 7.5x4.5x7.5cm/2.95x1.77x2.95in Color: A: Rabbit , B: Dinosaur , C: Pig , D: Duck (optional) Quantity: 1PC note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!