Goliton 3.5mm Wireless Bluetooth Audio Transmitter Digital Sound Audio Decoding Optical Coaxial Transmission Sound for Television Blu-ray DVD Smart Phones Computers Fiber optic transmitter is suitable for set-top boxes,TV BOX Apple,TV, blue DVD,audio amplifier and other products with fiber, coaxial, 3.5MM audio output type. Newest digital to analog audio decoding function. Newest CSR with flash version of Bluetooth wireless transmission function. The maximum distance of 20 meters.