Battery: built-in 2500mAhx2 battery. Voltage: 6-8.4V. Charging time: >2h. This cordless handheld fan is small and exquisite, compact and lightweight, and can be easily carried. It is made of ABS and metal material, with a simple design, reasonable structure, and powerful performance. The fan adopts a low-noise and high-speed brushless motor, providing strong blowing power. It has a strong wind design, one button on/off, and simple operation, with a perfect dust removal effect. Wind speed up to 35M/S, motor power up to 200W. It is widely used for carbon fire blowing, industrial dust blowing, soot blowing, keyboard cleaning, car and motorcycle cleaning, and more.