About the fan:Durable and Compact sizeResist compression, resistant to fall, with a broad bracket, you can set it up anywhere you need it to be, suitable for movable use. Size: 8.3*4.9*10 inch, Weight: 660g, extremely convenient for a car camping, study room, quiet office, home, bedroom, kitchen, BBQ, picnic, and general indoor & outdoor use.Advanced Aerodynamic MechanismExcellent brushless motor, stepless speed regulation, and 270-degree variable tilt head that enables it to circulate super strong air to anywhere you want. You can change the speed by simply switching the power button. It will run much quieter with an environmental-friendly PC fan blade which may be great for light sleepers.Built-in LED LightDesigned with 3 mode energy-efficient white LED's that can provide you with wonderful illumination and enhance your nighttime use. The two switches (light switch and fan switch) allow you to use these tent fans in fan mode, light mode, or both together.7800mAh Large CapacityConfigured with a long-run durable 7800mAh 18650 battery with great Type-C charging ports for 2A fast recharging. On a full charge, this fan can work up to 6-25 hours, depending on the setting it is running on. It takes 5 hours to recharge fully. You can charge it via your car charger, power bank or laptop.NK-F20 Specifications:Input VoLtage: DC5V-2AOutput Current: 1W-6WBattery Model: 18650 7800mAhLED Power: 2WService Time: 6-25HCharging Time: 5HCharging ports:5V2A Type-CRotatable: 270 Degree