product description: 1 [Raise temperature quickly] Built-in high-efficiency heating element, the temperature of the hand warmer increases quickly, without too much waiting 2 [Constant temperature control] After the warm hand treasure is started, it can continue to heat up. When the temperature reaches 47.5 degrees Celsius, it stops heating up and keeps the temperature constant. 3 [Dual-purpose mobile power] The product is not only a hand warmer, it has a built-in large-capacity lithium battery, which can also charge other electronic devices when it brings you warmth 4 [Comfortable touch feeling] The product uses high-quality silicone, it feels comfortable to touch, as silky as baby skin Delivery quantity: 1pcs Product colour: green Product size: 65.5*48.5*95.5mm6