1Multifuction， quick hand warmer and power bank 2in1. It's not only a hand warmer but also a emergency backup battery. 2This mini hand warmer have builtin intelligent protection system is provided with protection system of power on， short circuit and over loading， etc. Ensured the security of products. 3Can heat up within seconds， there are three different temperatures 5560，4752， 3545， it reaches the temperature you want very quickly. 4Handy carrying anywhere with any pocket or bag while sporting， fishing， hiking， camping， skiing， travel or play sports outdoors. 5Portable ， it is a nice size to hold and feels smooth in your hands. Great gift for girls， kids， youth， boys， men， women， elder.Condition: 100% Brand NewItem Type: Hand WarmerMaterial: ABS+AluminumColor: As shown in the pictureSize: Approx.10x6.8cm/3.9x2.7in(H x W)Built-In Battery: Lithium ion battery，4000mAhGear: Three gears， red for 55-60， purple for 47-52， blue for 35-45Instructions:The product has only 1 button， short press it to turn on， then press to adjust the gear， and then turn off after the third gear. }1 x Hand Warmer with Lanyard1 x USB cable1. Please allow 12cm 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 the real object. Please take the real one as standard.3. Due to the transportation time， when the product arrives in your hand， it may be out of power， please charge it before use.