Features:1. 5s Quick Heat: Heat up to setting temp only need 5s, and maintain a consistent temperature 39. 2. Lightweight & Smooth: Grace appearance, smooth surface, small well-constructed body make it lightweight, easy to grasp, and slip into gloves or pocket. 3. Safe To Use: Overheating protection mechanism, intelligent polymer chip, automatic power-off protection, making the warmth safer. 4. Durable Material: Premium silicone material, excellent touch, can prevent dirt, impact and wear, compact and lightweight design, easy to carry and keep, recommended for travel and home storage.5. Multipurpose: Perfect for working, hunting, fishing, camping, hiking, skiing and so on.Specification:Material: Silicone Product Color: Pink, Blue Product Size: 28 x 5 x 2cm Product Weight: 100gInput: 5A-1APower: 1.5WBattery Charging: 4.2VPolymer Battery: 1000mAh With Protective PlateConstant Temperature: Constant Temperature 39 DegreesBattery Life: 7.5 Hours of Battery LifeWorking Temperature: -10 to 60Package Included:1 x USB Hand Warmer Power Bank1 x Cable