Features: Multi-Function Design: Combines a portable power banks, hand warmer, and flashlight in one compact device, offering versatility for outdoor activities and emergency situations. Efficient Heating: Provides quick and long-lasting heat to keep hands warm in cold weather, with adjustables temperature settings for personalized comfort. Portable Power Banks: Equipped with a high-capacity battery to charge smartphones, tablets, and other devices on-the-go, ensuring you stay powered up in any situation. Compact & Lightweight: Conveniently designed for easy portability, making it ideal for travel, camping, hiking, or daily commuting in winter. Safety Features: Includes overcharge protection, temperature regulation, and durable construction to ensure safe and reliable performance. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Battery capacity: 5000 mAh Size: 99*50*28mm Charging time: about 3 hours Temperature: Low temperature: 45 temperature: 50 High temperature: 55 Usage time: Low temperature: 12 hours temperature: 5.8 hours High temperature: about 4.5 hours