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 3.5mm or/and 2RCA audio cable.It allows users to stream music directly from Bluetooth devices to their favorite speaker. Stream Music on 2 Speakers It is with both 3.5mm and 2RCA(Left+ Right Sound) connection options, and allowing you to enjoy music wirelessly on 2 speakers simulteneously. 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 Output: Female R/L audio and 3.5mm audio Frequency Response: 20Hz-22kHz Output Power: 25mWBattery Capacity: 3.7V/200mA Operating Time: up to 8 hours and Micro USB for power supply(5V) Transmit Range: Up to 10m/33ft Approximate Charging Time: 2 hoursDimension: L66.6xW66.6xH24 (mm) Package Contents Bluetooth Receiver x 1 Micro USB Charge Cable x 1 3.5mm Audio Cable x 1 Manual x 1