F84 Summer Cooling Fan 100-Gear Adjustable Desktop Dual Turbo Fan Head Cooler - White+Grey ?Infinite Speed Adjustment: Enjoy precise control with 100 levels of speed adjustment,allowing you to customize airflow to your preference ?Auto Oscillation and Digital Display: Features automatic head shaking for wider coverage and a convenient digital display for easy operation ?Compact Dual Fan Head Design: Dual fan head design,with compact size,offers a powerful cooling effect ?Long-Lasting Battery: Equipped with a 4000mAh battery,ensuring extended usage time for uninterrupted cooling Specifications: ?Product model: WT-F84 ?Material: ABS ?Input Current: 2A ? ?Input voltage: 5V ?Input power: 10W ? ?Battery usage time: ?Fan: 9h (gear 01),5.2h (gear 50),2.3h (gear 100) ?Fan + shaking head: (gear 01) 4.7h,(gear 50) 3.2h,(gear 100) 1.8h ?Battery capacity 4000mAh 3.7V (14.8Wh) Package included: ?1 x Cooling Fan ?1 x Charging Cable ?1 x Certificate ?1 x English User Manual