Enable Your Traditional Speakers with Bluetooth Function  This bluetooth receiver for home stereo connects any bluetooth-enabled smartphones, tablets and computers to powered traditional speakers or even your A/V receiver with a 3.5mm to 3.5mm or 3.5mm to 2RCA audio cable.   It allows users to stream music directly from Bluetooth devices to their favorite speaker.  Advanced Bluetooth V4.1 + EDR  Bluetooth v4.1 music receiver can provide higher quality and much clearer stereo sound than old Bluetooth v3.0/2.0 receiver.  EDR is short for 'Enhanced Data Rate', which ensures a faster data transmission rate and much more stable connection between a Bluetooth device and the Audio Receiver.  Recharge and Resume  This bluetooth receiver is with built-in 200mAh battery, allowing it to provide up to 8 hours of continuous quality music playback for car systems, home theaters, smart phones, and tablets. With a quick recharge time of only 2 hours, it's easy to recharge and resume the music.  Specification  Bluetooth Version: 4.1  3.5mm stereo audio output and built-in On/off button  Frequency Response: 20Hz-22kHz  Output Power: 25mW Battery Capacity: 3.7V/200mA  Operating Time: up to 8 hours and Micro USB for power supply  Transmit Range: Up to 10m/33ft  Approximate Charging Time: 2 hours   Dimension: L54xW54xH13.7 (mm)  Package Contents  Bluetooth Receiver x 1  Micro USB Charge Cable x 1  3.5mm Audio Cable x 1  Manual x 1