WAIST FAN + COLLAR FAN: Portable Personal Fan – With a new neck design, it makes you look so cool. You can hang the fan around your neck and take it anywhere. A lightweight and cool hanging waist fan, lightweight, cool and design product, no burden when playing sports, very suitable for outdoor work and travel to cool down and eliminate sweat. POWERFUL FAN, LONG BATTERY LIFE: Real 6000mAh battery, 3-speed design, fast cooling, portable size fan supports up to 23 hours working time while blowing soft wind at low speed. Cool down on the job site or outdoors for a whole day without worrying about power off. STRONG WIND AND LOW NOISE: This USB table fan creates strong wind for quickly low temperature, noise can be controlled below 42 dB. but it just has a very light voice while working even in the strongest wind speed, the noise does not affect office work and can be used as a desk fan. you don’t worry about being disturbed when working or traveling, letting you relax to enjoy your trip.