Aluminum alloy surface. Safe and secure. Avoid explosions. The aluminum alloy can quickly heat the sides of the charger. Warmth can spread on average. An internal chip protects the circuit. With intelligent protection system. The temperature is adjustable. The double-sided heated hand warmer has 4 heating settings: first gear (40), second gear (45), third gear (50), fourth gear (55); long press the power switch to open it or shut down. It heats up quickly in 6 seconds and warms on both sides, making your hands warmer comfortably. It contains more than 5200mAh and can be used as mobile power for ipad, iphone, android, and can quickly charge your device anytime, anywhere. Use the USB Type-C charger for repeated charging and long-lasting warmth. Portable and easy to carry. The perfect size can be placed anywhere in your pocket or bag to warm your hands quickly and safely. No matter where you go, keep warm in winter. The touch is smooth and comfortable. The latest upgrade design has a larger surface. Lovely fashion design is the perfect solution for cold winters. Ideal Christmas and Valentine's Day gifts for your friends, family or lovers. Also warm your hands and heart. Delivery quantity: 1pcs Product colour: pink Product size: 100*55*15mm