Product use: 1. Power on/off: Connect the battery and long press the power button to turn the phone on and off. 2. Start mode/gear switching: Manual mode: long press the start button, the device will start to blow out air, release the start button to stop (third gear state) Automatic mode: Click the start button to turn on the first gear, click again to switch to the second gear, and click again to shut down. 3. Indicator light: The marquee speed is synchronized with the gear position. When the marquee flashes, it means that the battery is low and needs to be charged or replaced. 4. Safe work: This product adopts low temperature working mode and will not overheat.<br><br>Battery interface: For Makita Please note! No battery or charger included as standard! Product parameters Product Name: Super Turbo Fan Product model: WN-02 Battery model: 18650 (not included) Battery capacity: 2000(ND)*5, 4.2V*5, total 21V (not included) Battery voltage: 21V Charging current: 1A Rated maximum power: 150W Charging time: 2-3 hours Working hours: First gear (120 minutes) Second gear (45 minutes) Third gear (15 minutes) Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. color: Black Material: ABS<br><br>Package Contents: 1*Fan<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.