Features: WR362 is a Wirelessly transmitter with 2.4Ghz technology for highly definition sound quality without delay transmission Converts Opticals/Coaxials digital signal inputs into 2.0analogue stereo signal for transmission to a receiver up to 50 metres away for listenings. Better sound quality and latency parameters; transmitter also supports stereo input. This product solves problem of repetitive switching/setting of output format of source and problem of cable hook. Low power consumption of receiver, standbys battery of 7hours. Specifications: Item: WR362 2.4Ghz Wirelessly Transmitter And Receiver Adopting 2.4Ghz technology highly definition sound quality without delay transmission Transmitter Supports Opticals and Coaxials digital inputs Standbys:about 7 hours Standard：Optional Size:as Pitures Package Includes: 1Set WR362 2.4Ghz Wirelessly Transmitter And Receiver note: Due to the problem of lighting effect and shooting, there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurment