Product name:Turbo dust blower with charging fan Model: YCY-090 Product interface: TYPE-C Input voltage: 5V-2A Output voltage: 7.4V Discharge power: 1-80W Motor model: 110,000 rpm brushless motor/drone brushless motor Battery capacity: 8000 mAh Usage time: 0.5-35 hours Charging time: 3 hours Function: stepless speed change 0-30 gears A+B+C, A+B, A+C Instructions for use 1. Before using for the first time, please be sure to the battery before starting to use it to avoid affecting the battery performance. 2. The Feng fan has a low-power protection function. The highest gear cannot be used when the power is low. When the power is lower than 10% in the startup state, it will enter the low-power protection mode, and then automatically downshift. The gear position corresponds to the power. If the remaining power is 8%, the current maximum gear is only 8 gears, and the gear position will automatically decrease as the power decreases. 3. There is no infinite encoder knob, no self-check is required, you can long press the power on/off at any position, quickly turn the knob to directly switch to the highest speed or the lowest speed gear, and slowly turn the knob to +1 or -1 gear for each damping position. 4. The digital display screen shows the percentage of power when the fan is charging, special machine, and working. The current power will be automatically displayed during the charging process. 100 will be displayed when it is full. The gear operation will display the gear position in real time, and it will automatically switch to the power display after the gear is completed. 5. It is recommended to in time when the power is lower than 30%, and it is recommended to store it between 50-80%. Precautions 1. Long-term continuous high-speed (gear 20 or blowing mode will cause the internal accessories of the fan to heat up. It is not recommended to use the highest gear for a long time. 2. If water or other solutions enter the product, be sure to disconnect the power supply and contact after-sales service in time. 3. Please connect the charging input and output ports correctly. It is strictly forbidden to with devices that exceed the rated voltage. 4. When charging, please do not buy flammable and explosive items. Please disconnect the power supply in time after charging is completed. The product cannot be used while charging 5. It is strictly forbidden to use in hot and humid environments such as sauna shower rooms 6. It is strictly forbidden for children under 12 years old to use it. 7. It is strictly forbidden to use it after removing the mask fan to avoid accidents caused by hair and other foreign objects stuck in the fan blades. 8. Please do not disassemble, repair or modify the machine by yourself. Color: Gray Net weight of the product: 385g Packaging weight: 600g Packaging size: 250*134*55mm