1. Charging: Please Charge First, Red Is Full, Blue Is Feeding. It Uses A New 21700 Battery. To Safe Transportation, The Factory Power Is 10%. Use It After It Is Fully . Charge After Feeding. The Charging Time Will Be Extended By 30 Minutes. , Charging Time From 20% To 100% Is 2.5 Hours 2. Cycle Charge And Discharge Times 1500+ 3. Please Do Not Remove The Maintenance Cover At Will. 4. Blocks Are Switches 5. Turn The Knob Clockwise To Increase The Air Volume And Counterclockwise To Decrease The Air Volume. 1. Product Name: Violent Fan 2. Battery Capacity: 8000mAh 3. Working Voltage: 5-8.4V 4. Charging Time: 3.5H 5. Theoretical Maximum Battery Life: 4H () 6.Colour:As Shown 7.Material:ABS Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Package Contents: 1 x Turbine Handheld Fan 2 x Air Nozzle 1 x Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.