Portable Mini Air Conditioner Cool Handheld Cooling Fan Travel USB Rechargeable Fan Packet Style, Random Color From Rose, Black, Green Powered By: rechargeable battery, Voltage: 3.7-4.2V Can be placed on the desk, hang on your neck and held in your hand Fashionable iPhone cellphone shape design, Mini and portable Bring cool air to you in this long and hot summer Size: 4.52(L) x 2.59 (W) x 1.37(D) inch