Featuring a compact size, the air cooler is easy to carry. And the low noise design will not cause any disturbance when you are studying or working. There are 3 speeds available in this air cooler. And it provides 3.5W low energy consumption with constant cool air blowing. It is made of high-quality ABS, PP, and electronic component material.The length of this air cooler is 27cm and width is 6cm. It is perfect for dormitory, home, office, study, etc. Material: ABS, PP, Electronic Component Battery Capacity: 1200mAh (Included) Number of Fan Blades: Bladeless Wind Speed Gear: 3 Gears Fan Type: USB Fan Operation Mode: Normal Button Features: Adjustable Wind Speeds, Low Noise, Mini Size Details: L: 27cm/10.63", W: 6cm/2.36"(Approx.) Package Includes: 1 x Cooling Fan 1 x USB Cable