Hanging Neck Fan Air Conditioner Portable Summer Air Cooler for Outdoor Sports Travel Wearable Neckband Fans

1. Refrigeration sheet: cold source 2. Power switch: press and hold for three seconds to turn on or off 3. LED indicator: power indicator after booting 4. Cooling effect (+): The cooling effect is stronger and it can be adjusted in 3 speed. It beeps when pressed and when it reaches pressing the button again will fail with 2 beeps. 5. Refrigeration effect (-): The cooling effect becomes weak 1 sound indicates that the cooling will become weaker and when the cooling effect is lowered to the lowest level press 2 sounds to indicate that it will be invalid. 6. Power indicator: Internal battery power display. The full light is full or to full power if it does not or the bottom light flashes it means no power or serious low power (automatic shutdown) 7. Charging port: TYPE-C charging port. Support power charging above 5V/2.4A Polymer battery: polymer battery 4000mAh Input: 5V/2.4A Power: 10W Charging time: 1.5 hours Working time: 6-8 hours Product size: 208.5 x 163.5 x 96.5mm Net weight: 0.5kg Working environment: Working temperature: 0-40℃ Working humidity: 10%-90%RH (non-condensing) Storage temperature: -40-70℃ Storage humidity: 5%-90%RH (non-condensing) color:White Material:ABS+Aluminum Package Contents: 1 x Neck Refrigerator 1 x USB Cable Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.