Features: brand new and high quality special miniature convex lens is used at both ends of the optical fiber to make the light beam highly concentrated. The chief mate reduces the reflection of the light beam on the inner wall of the optical fiber, thus shortening the transmission journey. Even if the line body is in extreme distortion, the signal can be kept high fax. Fiber from any power supply or electromagnetic signal noise interference, and to ensure that digital transmission frequency up to 250Mbit/s, far more than the digital connection line, music resolution higher, is a reliable digital transmission medium. Optical fiber digital line is suitable for medium used to transfer digital audio signal, unlike traditional connection with copper as a conductor of signal, vulnerable to electromagnetic interference, fiber optic lines transmitted by the high quality and clear voice quality is unmatched by traditional wires, especially digital signal transmission by digital decoder can be 7.1 -channel sound distribution, and then form a ring field sound, Digital optical fiber is also used to record high quality. Widely used in DVD/MD and other digital equipment, is a high resolution audio for replay. When the beam is concentrated, it can reduce the transmission for time difference and effectively reduce the digital for time difference distortion. The spherical design of the miniature convex lens can keep close to the optical input end to ensure the distortion caused by the connection deviation. Specifications: Material:PVC Length:Approx.180cm/70.87in,300cm/118.11in,500cm/196.85in(optional) Net Weight:11g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Digital Optical Audio Cable