Package includes: 4PCS Mini Fans Material: Plastic and metal Capacity: 30.7*10*2.7cm/12.09*3.94*1.06inch Perfect for office, home and travel. Material: Plastic and metal Color: whitepink, blue and green Capacity: approx 197.5g/6.97ounce Size : 30.7*10*2.7cm/12.09*3.94*1.06inch Safety: The fan leaves are soft and won't scratch us when we accidentally touch them Easy to carry: Small size, when we go out, just take off the fan's head blade and put the two parts in the bag, it won't take up too much space Wide range of applications: suitable for notebook computers, mobile power supply and other appliances with USB interface Warm tips: When removing the blade, hold the cylinder on the outside side to prevent the green round from being pulled out.