Safety Hand Warmers: Safety First. This hand warmer has protection functions such as power on, short circuit and overload to ensure product safety. Anti-shock and anti-scalding. Double-sided heating and 3-level mode: The hand warmer can heat up in seconds. Three different temperature grades [104~113(40~45)], [113~122(45~50)], 122~131(50~55)], you can quickly reach what you want temperature . PORTABLE AND HIGH CAPACITY: Just the right size for: fishing, hiking, camping, skiing, travel or outdoor sports, it can be carried anywhere in any pocket or bag. The perfect reusable hand warmer. Received: Hand warmer, charging cable, instruction manual, gift box, cotton handbag. Best Gift: 2-in-1 Quick Hand Warmer and Power Bank. Not only a hand warmer, but also a portable power bank. Great gift for girls, children, teens, boys, men, women and the elderly. Size: 12*3*7.2cm Colour: Black Packing list: 1pcs