Function button: long press for three seconds (on/off) Touch the button: cycle to switch the wind speed Wind speed: three winds When working: blue light flashes When charging: red light is on Fully charged: blue light is always on Insufficient power: red light flashes. FAN, COOL YOUR SUMMER Hand Free Headphone Design Wearable Portable Neckband Mini Fan with USB Rechargeable for Traveling Outdoor Office.1*[Upgraded Design]: built-in cotton, can be filled with perfume or essential oils , let you enjoy the fresh air. seven led color lights,360° rotating design, freely adjust wind direction, 3 adjustable speed level, simulate the natural wind to make you cool in the summer. 2*[Low Noise Design]: Made of Eco-friendly ABS and silicone. Unique seven fan blade design, makes the hands free neckband fan softer and more durable and quieter, less jittery. 3*[Longer Working Time]: Rechargeable neck fan, equipped with 2000mAh Lithium-Ion battery. 5-8 hours working time depends on different speeds. 5*[Summer Ideal Gift]: 3 in 1 personal fan, can be hung on the neck. Also as a handheld fan and can be placed on the table as a desktop fan. It is a must-have gift for children, students, and men/women, outdoor sports/cooking/travel on holidays.