Feature:1. Long Range Wireless Transmission: Using 2.4G technology to achieve highly clear audio quality without delay transmission. With a maximum distance of 50 meters, you can enjoy wireless audio without being restricted by cords.2. Multi Purpose Transmitter: The transmitter can convert fiber optic, AC 3, DTS, PCM digital audio signal inputs into 2.0 analog stereo audio signal and transmit it to receiver at a distance of 50 meters. Also supports R L stereo input.3. Convenient Design: This wireless audio transmission system can solve the tedious operation problem of repeatedly switching or setting output audio, the format of signal sources, and the problem of disorderly cable binding.4. Long Standby: The receiver comes with a built in battery that can last up to 7 hours on standby, allowing you to enjoy wireless audio on the go.5. Wide Application: This wireless audio extender kit can be widely used in home audiovisual, schools, electronic game fields, and other places.Specification:Item Type: Audio Transmitter and ReceiverMaterial: ABS, PCBMaximum Transmission Distance: 50mReceiver Battery: 250mAh Lipo Battery (Built in)Standby Battery Life: 7 HoursRF Frequency: 2400MhzTransmission Power: 14DBSignal to Noise Ratio: 67DBFrequency Range: 20Hz to 14.5KHzSampling Rate: 44.1KHz to 96KHz 24 BitSupported Audio Formats: AC 3, DTS, PCMMaximum Output Level: 1.75Vp-pOperating Temperature: -40 to 85Storage Temperature: -60 to 120Operating Environment Humidity: -10 to 90% RH (Non Condensing)Storage Environment Humidity: -5 to 95% RH (Non Condensing).Package List:1 x Receiver1 x Transmitter2 x USB Charging Cables1 x Audio Cable1 x User Manual