1.Hand free personal fan: Free your hands anywhere; fashion style makes you look so cool. To hang around your neck, suitable for hot weather travel, saved you from embarrassment on numerous occasions, suddenly breaking a sweat in public. 2. Leafless design. 78 holes are out of the wind, 360 wide wind surface, more holes, more natural wind area, no headaches. 3rd adjustable speed level: low / medium / high speed level. Set the appropriate fan speed by pressing the power button. Neckband fan with strong airflow allows quick and easy Access to instant hot flash relief. Hang the cooling fan around your neck and take it with you wherever you go. 4. Long lasting battery life, all the way with the wind. Built-in two 2000mAh lithium polymer batteries that can be charged for 3 hours, can work for 6-10 hours whether you are on your way to work or shopping, it's enough to get you all the way. Specification: Battery capacity: 2000mAh (battery included) Charging time: approx. 3 hours Service life: approx. 6 hours (1 level) approx. 4 hours (2 levels) 2 hours (3 levels) Charging interface: USB Color: green / white option Material: ABS Size: 198 x 197 x 60 mm Package included: 1 * hanging neck fan 1 * USB cable.The ZMD team is at your service and we hope you enjoy your life