BLADELESS NECK FAN LIGHTWEIGHT DESIGN, SUITABLE FOR HANGING NECK FOR A LONG TIMEFeaturesSurround air, brushless motorChanging lights, three-speed windFree your hands while outputting strong wind and enjoy the cool easilyBattery capacity: 4000mAhCharging interface: Type-CWorking time: about 3-8hCharging time: about 3.5 sWorking power: gear 1.8W, second gear 2.6W, third gear 4.7W100% SATISFACTION GUARANTEE We are so confident you will love our products. You are our priority and we are committed to providing 100% customer satisfaction. So, If you are unsatisfied with our products ever, reach out to us and we will do all we can, to ensure your complete satisfaction. Your satisfaction is our priority.