LIGHT AND PORTABLE: Made of aluminum alloy and high quality PC, very durable, compact and elegant. Have an absolutely excellent Contact feeling. Perfect for indoor and outdoor use, easy to transport.   NO MORE COLD: Can heat up quickly in seconds and immediately give off heat for you, a great winter companion that always keeps your hands warm    PERFECT GIFT: Best gift ideas in cold winter. Perfect for family and friends, Christmas, New Years or Winter   SAFE: Optimized circuits extend the life of the pocket hand warmer and offer protection against overdischarge, overload, overheating and short circuits.   Battery capacity: 4000mAh   Heating power: 10W   Heating temperature: 40-60℃   Power:USB charge   colour: white/blue/pink   Material: PC+aluminum alloy   Size: 11 x 10 x 6CM      Package Contents:   1 x Hand warmer   1 x USB data cable      Only the above package content, other products are not included.   Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.