BLUETOOTH TRANSMITTER AND RECEIVER: Transmitter function transforms 3.5mm audio-out media devices into a Bluetooth device capable of streaming Bluetooth audio; Receiver lets non-Bluetooth devices like car ,CD players or home stereos receive high quality audio. UPGRADED BLUETOOTH 4.1: The latest Bluetooth 4.1 technology with A2DP for enhanced audio quality , improved connection stability and faster pairing, intelligent compatible, Android, IOS system mobile phones and PAD, and all Bluetooth audio equipment. CONSTANT STREAMING AND AUTOMATIC RE-PAIRING: Built-in 600mAh Battery ensures up to 8 hours working time, support charging and streaming at the same time, and automatically re-pair with existing paired devices, transmit wireless audio transmission. ANC NOISE REDUCTION & AEC ECHO CANCELLATION: Elimination of built-in AEC echo and ANC elimination circuit noise, offering you magnificent stereo sound and wonderful sound quality, built on an enhanced signal transmitting circuit, quick connection more stable sound. STRONG COMPATIBILITY: Compatible with all Bluetooth-enable Audio Devices, stereo headset, headphones, speakers and other Stereo System with 3.5mm port. Wireless range is up to 33 feet for transmitter and receiver functions. Bluetooth 2-In-1 Transmitter and Receiver is a versatile gadget that can be used to transmit premium-quality sound wirelessly from non-Bluetooth sources straight to Bluetooth headphones or speakers. Also allows traditional audio devices to receive music from mobile or tablets. Bluetooth 4.1 Technology Uses the latest Bluetooth 4.1 technology with A2DP to maximize device compatibility, Energy efficiency and pair speed. You can enjoy high-quality sound wirelessly. The adapter will even automatically re-pair with existing devices. Receiver Mode B6 Bluetooth Receiver change the traditional speakers, headphones or wired home stereo system into Bluetooth-enabled ones. After paired, play music wirelessly from your Bluetooth-enabled Smart Phones, Laptop, Tablet and more without the hassle of cables. Support Automatic Re-connection. Transmitter Mode B6 Bluetooth Transmitter is specially designed for the Audio Devices ( MP3, MP4, TV , PC and older media devices like portable CD players , etc.) without built-in Bluetooth function. Instant Shipping from bestdeals. You can connect the Bluetooth Transmitter to the audio devices via the included 3.5mm Audio cable , changing these audio devices into Bluetooth-enabled audio devices. Specifications Bluetooth Version: V4.1 Frequency Range: 2480MHZ Support Bluetooth Profile: A2DP, AVRCP, HFP, SPP HID Bluetooth Range: Up to 33 feet(10M) Battery: Built-in Rechargeable Li-polymer battery(600mAh) Working time:Up to 8 hours Charging time:about 2H Charging input voltage:DC 5V Input/Output connecting mode:3.5MM stereo audio port Compatibility:compatible with phones and PAD of Android / IOS system,and all the bluetooth audio devices. Package includes: 1 x 2-In-1 Bluetooth Receiver and Transmitter 1 x AV Cable 1 x 3.5mm Audio Cable 1 x USB Charging Cable 1 x User Manual