Product parameters: Product Name: Neck Hanging Fan Product Colors: White/Ice Green/Apricot Product size: 11.8 * 5.9 * 4.9cm Product weight: 0.175kg Product Material: ABS+Silicone+Electronic Components Rated input: DC5.0V/1.0A Working current: 0.25-0.9A Rated power: 4W Battery capacity: 1600mAh Battery usage time: about 6 hours for 1st level air flow, about 3 hours for 2nd level air flow, and about 1.5 hours for 3rd level fan Charging time: about 3 hours Product Features: 1. Designed with a collapsible hose, compact and portable. 2. Polymer lithium batteries are safer and more reassuring. 3. High quality silent brushless motor with strong wind power. 4. One click operation, 3-speed adjustable air volume. 5. The electroplating process of the air inlet highlights the design aesthetics. 6. Simple appearance with elegant color matching. Product operation instructions: Fan function: Press the switch once to start the first level of air volume, press the switch twice to start the second level of air volume, press the switch three times to start the third level of air volume, press the switch four times to turn off the power. Indicator light description: The fan working status indicator light is blue, the charging status indicator light is red, and the fully charged indicator light is green. Packing list: 1 * Fan host 1 * Type-C charging cable 1 * Product manual