Bright and Ultrawide Illumination: ScreenBar Pro offers over 1000lx central brightness and a 500lx range within 85*50cm, outperforming most desk lamps and enhancing eye comfort with ample illumination. High Compatibility: Fits monitors 0.43-6.5cm thick and curvature 1000-1800R. Patented clamp design accommodates monitors with special back designs or non-flat top bezel. Easy setup and no blocking to camera lens. Motion Sensor: The ultrasonic motion sensor detects movements within a 60+/-10 cm diameter range, automatically lighting up when you’re nearby and shutting down after 5 mins of absence to save energy.