Stepless speed adjustment design, push the button from bottom to top to adjust the fan speed from low to high Using the same motor as a high-speed hair dryer, the output wind speed can reach 7m/s, surpassing 95% of fans 13000RPM high-speed brushless motor, effectively reducing friction noise Long-lasting battery life eliminates the hassle of repeated charging, allowing you to carry it around the house without fear of challenges Specifications: Product model: FS20 Working voltage: DC5V/1A Maximum power: 8W Charging indication: charging light flashes/fully charged light stays on/low battery white light flashes quickly and shuts down Battery: 18650/2000mAh Fan: stepless speed adjustment Charging time: about 2.5 hours Charging interface: Type-C Battery life: about 0.8-4 hours Control method: push button + button Size: 162x65.6x62mm Net weight: 0.20kg