Features: * Wireless 4.1+EDR technology ensures transmitting strong signal in high-quality and high speed. BT range reaches up to 10 meters in open space without obstacles. * It is specially designed for dock station on BT speakers. * Plug this receiver into dock station, the music will be transmitted into dock station from your mobile phone which is BT-enabled. * Fully plug and play, no need extra power. * Compatible with Bose SoundDock 10, Bose SoundDock II, Bose SoundDock Portable; for YAMAHA TSX-130, TSX-70, PDX-13; for SONMUSE crystal ball B1, SONMUSE zen D6, SONMUSE sleeping beauty B4; for Pioneer X-SMC1-S; for JBL onBeat; for PHILIPS DCD8000/93, DS9000, DCD7010, DS1100, DCM3060, DCM713, MCD909, DCD3020, DCM2055; for SONY RDPM15IP; for Telefunken i-Concerto+LS560; IHOME Series; for SAMSUI Series; DOSS Series; BiJELA Series, etc. Specification: Model Number: BT4854 BT Version: V4.1 + EDR, Class 2 BT Profiles: A2DP&AVCRP Frequency: 2.4GHz--2.4835GHz Transmission Distance: 10m/3.28ft Material: Plastic Color: Black, White (Optional) Item Size: 45*37*9mm/1.77*1.45*0.35in Item Weight: 11.5g/0.41oz Package Size: 12.5*10.5*2cm/4.92*4.13*0.78in Package Weight: 25g/0.86oz Package List: 1* BT Receiver