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: 100g Input: 5A-1A Power: 1.5W Battery Charging: 4.2V Polymer Battery: 1000mAh With Protective Plate Constant Temperature: Constant Temperature 39 Degrees Battery Life: 7.5 Hours of Battery Life Working Temperature: -10 to 60 Package Included: 1 x USB Hand Warmer Power Bank 1 x Cable