Features: Rechargeable: There is a built-in long-lasting battery in the cooling fan which can be used for a long time after fully charged. Adjustable: This air fan has 3 speeds for choosing, providing you with different natural winds in summer. Portable: You can wear the fan on your neck or put it in your pocket, it will not take up so much space. Occasions: Suitable for home, office, school and other places, this personal fan is suitable for fitness, sleep, work, study, walking, etc. Quality Assurance: Our product will definitely win your heart with its premium quality If you have any inquiries, please contact us. Specification: Color: Green, pink, yellow Size: Approx. 6.5*7.7*5cm/2.55*3.03*1.96inch Voltage: DC5V Power: 0.6-3W Output Voltage: 3.7V Charging Current: 0.5A Charging Time: 2-3h Work time: 1-3h Battery: Built-in 350mAh Gear: 3 speeds Note: Due to the light and screen difference, the item& 39;s color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. 1 Piece Portable Fan(with 1 Piece USB Cable)