1、Built-in noise reduction microphone can provides clear sound quality of dialogue effect. 2、The chip is integrated, while the sound quality is clear and the dialogue effect is like face-to-face. 3、Supports audio and picture synchronization, USB camera supports practical adoptability. 4、HD camera can be adjusted 180 ° up and down, and the camera can be rotated 360 degrees. And the angle can be adjusted as needed. 5、Imported optical glass lens has high accuracy and the picture is not distorted. 1 x HD Camera1 x English User Manual Item Type: HD CameraVersion: S50 Model 720P HD Version / S60 (Optional)Sensor Type: CMOSSensor Pixels: 1 MPInterface: USB 2.0System Support: For win2000 / XP / 7/8/10 / Vista32btAdditional Features: Built-in microphone, individualversionCable Length: Approx. 1.5m / 4.9ftMaximum Score: 1280 x 720Photosensitive Type: CMOSDrive: Drive-freeFocusing Method: Fixed Conventional Focus Length : Approx. 50 ~ 100cm / 19.69 ~ 39.37in