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.<br><br>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<br><br>Package Contents: 1 x Turbine Handheld Fan 2 x Air Nozzle 1 x Data Cable<br><br>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.