1---LCD Display: It has 3 adjustable wind speeds and can display the current gear and power. When the battery is too low, it will send out a flashing signal to remind you to charge. 2---7 Ambient Lighting Effects: You can press and hold the light button to turn on the ambient light function. There are a total of 7 lights and 4 modes, including revolving lantern, breathing light, etc., you can set the perfect mood or match your environment. 3---Lightweight and Comfortable: Adopt high-quality silicone double hose, which can be 360flexibly adjustable for airflow direction and fit to your neck. Reduced weight, Caiitfarry neck fan weighs only 0.5 lbs, very lightweight and won't burden your neck, ideal for long time use. 4---Long-lasting and Convenient: Built-in 4000mAh battery, it only takes 2.5 hours to fully charge, and can be used for up to 10 hours. So you can do all your day's activities on a single charge, and it gives you the convenience and long-lasting power you need. 5---Quiet and Versatile: But that's not all, thanks to its high-quality motor and improved air duct, it runs quietly and has 70% more wind power, making it ideal for various scenarios, including indoor and outdoor use such as camping, Traveling, climbing, etc. This neck fan is your perfect companion. Features: Material :ABS+Silicone Size :220*170*55mm Voltage :DC 5V Input current :5V/2A Output power :5.1W Battery capacity:1800mAh *2 Charging time: 2.5H Operating time: 1 gear 2.50 hours, 2 gear 4 hours, 3 gear 6 hours Weight: 436g Colour: light green, purple, white