1. No Backlight Is Required, And The Display Content Of The Last Screen Can Be Maintained For A Long Time When The Power Is Turned Off. 2. The Power Consumption Is Very Low, And It Basically Only Consumes Power When Refreshing. 3. Easy To Carry And Store Easily 4. Professionals Are Required To Install The Corresponding Accessories To Avoid Damaging The Accessories. 5. Provide Complete Supporting Information Manual (Sample Programs Such As Raspberry Pi/Stm32). Working Voltage:5V Gray Scale:2-16 Levels (1-4 Digits) Global Refresh:Less than 1S Refresh Power Consumption:1.2W(Typ.) Point Pitch:0.112 x 0.112mm Sleep Current:Less than 0.01uA (Near 0) Viewing Angle:Greater than 170° Resolution:1872*1404 Pixels Naked Screen Version Communication Interface:Parallel Port Type:A:Naked Screen Version Colour:As Shown Material:PCB Size: Ink Screen Size: About 225.70x183.40x2.00mm Driver Board Size: About 65.15x56.21mm Display Size: About 209.66x157.25mm Package Contents: 1 * E-Ink Screen Bare Screen Module 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.