1,INTELLIGENT ANTI COLLISION：As soon as the sensor detect any resistance or obstacle during height adjustment, the desk will automatically stop the movement； 2, 4 colour choices for desk top, 2 colours choices for desk leg frame. 3, Noiseless Liftting : The voice of liftting <45db, like a whisper; 4,Smart Memory Button Design: The 3 customizable preset memory button is convenient for switching from sit posture to saddle posture & standing posture throughout the day with ease. 5,EXCELLENT QUALITY AND DURABLE:German Original OKIN Motor &High quality steel frame,poweful bearing, anti-collision and hard to deform.