1. 5V Power Supply Directly (No Built-In Battery); Stepless Speed Regulation: 10-100%; Fan Speed, Light Brightness Can Be Stepless Regulation; 2. Eye-Protecting , 3 Colors Of Light: Cool White Light, Yellow Light, Warm White Light; In The Case Of Long-Term Power On, The Gear Of The Fan Room And The Brightness Of The Light Have A Memory Function 3. The Light Can Be Adjusted At An Angle Of 40 4. The Wind Room Can Be Adjusted At An Angle Of 40; 5. The Base Comes With Nuts, Which Can Be Directly Installed On ; 1. Product Name: Screen Light Fan 2. Material: ABS+PC 3. Fan Power: 5.5W 4. Charging Input: DC 5V=--2.0A(Max) 5. Gear Mode: Stepless Speed Regulation 6. Light Color: White Light, Yellow Light, Warm Light Colour:black Size:32.5 x 8.2 x 12cm Package Contents: 1 x Outer Box 1 x Screen Light Fan 1 x Chinese And English Instruction Manual 1 x Charging Cable 1 x Bracket 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.