1、Ergonomic button design, intelligent wind speed control, enjoy different wind speed to bring you cool sensation 2、Built-in 2000mAh large capacity battery, support for 4-12 hours work 3、Pure copper motor with low noise, smooth speed of change and a large speed range 4、360 degree adjustment, the wind is free to control 5、Easy to operate, convenient and fast Features: Ergonomic button design, intelligent wind speed control, enjoy different wind speed to bring you cool sensation. Built-in 2000mAh large capacity battery, support for 4-12 hours work. Pure copper motor with low noise, smooth speed of change and a large speed range. 360 degree adjustment, the wind is free to control. Easy to operate, convenient and fast. USB interface for easy charging. It can be used for sports, leisure, office, fitness. Specification: Item Type: Neck Hanging Fan Material: ABS + Silicone Color: Black Red, Blue, Pink (Optional) Power: 0.3- 1.2 W Charging Method: 5V 1A Micro USB Cable Charging Time: DC 5V/1A 4hours Battery: 18650 lithium battery built-in 2000mAh Length: Approx. 19 cm / 7.5 inch Fan Size: Approx. 8 cm / 3.1 inch Package List: 1 * Fan 1 * Manual 1 * USN Cable