Product Spec. for Round shape Input voltage: DC 5V: Battery voltage: 3.7V Input current: 1A Output: 2-7W material:ABS/silicon/hareware Battery capacity: 2000mah charge time:around 5hour. Charging interface: Type-C Working time: about 6 hours for the first gear, about 4 hours for the second gear and about 2.5 hours for the third gear (2000mAh) Operation: Skin-friendly hose 360-degree rotating folding portable. Unique 180-degree rotating creative air outlet. The fan is regulated in three steps. Click the button for the first time for the first gear, and click the button again to switch to the second gear of the fan. Click the button three times to switch to the third gear of the fan; Click four times to turn off the fan. The blue light will be on when the indicator light is in the first to third gear. The charging indicator light shows: when charging, it turns red, and when fully charged, it turns red and turns off. Product maintenance Please charge the product for more than 2 hours before using it. Store and charge once every three months to avoid battery damage. Do not let children aged 0-6 use this product alone.