... and good shockproof performance;4. Our regular size is 17", 19", 21", other size can be customized;5. Humanization design, the ... and good shockproof performance;4. Our regular size is 17", 19", 21", other size can be customized;5. Humanization design, the ... by customers.10. Equipped with a microphone lift. LCD Lift 19 "LCD Screen lifts 21 "24"