Specifications: Battery type: Lithium-ion battery Battery capacity: 3000mAh Use time: 3 to 5 hours Charging time: 3 - 4 hours Package includes: 1x Bladeless Hanging Neck Fan 1x USB Charging Cable Usage Tips:< /p> You'd better charge for more than 2 hours before using it for the first time. One button can turn on/off; Press the button repeatedly to change the wind speed to low/medium/high, the indicator light turns into blue light. When the indicator light flashes quickly, it reminds you to charge the neck fan. When charging, the light turns to red light; When fully charged, the red light is off.