Cool and safe: Upgraded neck fan with 78 air vents, innovative turbo fan blades and wind hole design, efficient division of air and feel the cooler breeze more gently. Liberate your hands: Neck fan appearance is the headphone design, fashionable and versatile.When using without worrying about hair getting rolled in,also free your hands. USB charging & 3-speeds wind speed: USB powered rechargeable fan, can be charged by computer, phone charger, mobile power, etc. Built-in 4000 mAh battery provides 3 to 16 hours of operating time (depending on the speed of different gears). Press the power button to adjust the proper fan speed to meet your needs. Low noise and comfort: Excellent upgraded technology with multi-stage air duct design greatly reduces fan noise. Made of environmentally friendly ABS and silicone, it is natural to wear, comfortable and skin-friendly.