1.pop up type manual control; 2.screen brand: Samsung; 3.Angle can be customized. ... 17'', 19'', 21'', other size can be customized. Function:1. Manual control, Flexibility, stability, waterproof and dust proof;2. The screen ... be rotated from 0-90 degrees;3. Press panel type, manual control;4. Very easy operation for any user to control ...