Description Features: Multifunctional: Hand warmer & Powerbank combo. It's not only a portable hand warmer but also an emergency back-up battery.Easy to Use: Control with only ONE button. 4 heating modes adjustable. Shockproof anti-scalding radiation-free. 4000mAh: Rechargeable hand warmer with pocket-size and skin-friendly material finish easily held with one hand. Strong: Quality materials made which features light weight and long durability. It is a nice size to hold and feels smooth in your hands.Good Choice: Handy carrying anywhere with hanging on your neck. Also a perfect reusable hand warmer option in cold weather for office worker. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement.Description: Material: ABS+PC Battery Specifications: 4000mAh (2000mAh*2) Input interface: Type-C Output interface: USB Product weight: 295g Product size: 195*184*36mm Color/Style: As the picture shown