Product selling points: 1. The design of collapsible hose is and portable; 2. Polymer lithium battery, more secure; 3. High quality silent brushless motor, power; 4. One-button operation, 3rd gear can adjust the air volume. Product operating instructions Fan function: press the first switch to start the first air volume, press the second switch to start the second air volume, press the third switch to start the third air volume, and press the fourth switch to turn off the power. The above ; Indicator description: the fan working status indicator light is blue, the charging status indicator light is red, and the fully indicator light is green. Product parameters: Product name: DQ221 storage neck fan Rated input: DC5.0V/1.0A Rated power: 5W Battery capacity: 1600 mA Charging time: about 3 hours Battery service time: about 6 hours for the first air volume, about 3 hours for the second air volume, and about 1.5 hours for the third fan Material: ABS/silicone/electronic components colour: white Package Contents: 1 x small fan 1 x Type-c charging cable 1 x Chinese and English instructions 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.