?Enjoy a breeze of your choice with 3 adjustable fan speeds ?It has a cold compress function, giving you more comfort during hot summer ?The semiconductor cooling system, coupled with high-conductivity aviation aluminum, achieves a speedy 20?? temperature drop in just 3 seconds ?Experience serene cooling with the ?��20dB silent design. Perfect for relaxation, work, or sleep without any disturbance ?With its lightweight and compact design, this fan easily fits into your bag, making it ideal for both desktop and handheld use Specifications: ?Product material: ABS*aluminum*zinc alloy ?Working voltage: 5V ?Charging current: 1A ?Battery voltage: 3.7V ?Battery capacity: 3300mAh ?Output power: 4W ?Charging time: 2.5 hours ?Net weight: 203g ?Product size: 75*55*185mm Package included: ?1 x Fan ?1 x Charging Cable