Bluetooth 4.1 Audio Receiver, Wireless Audio Adapter NFC-Enabled Wireless Speaker Adapter with 3.5mm Dual Aux Micphone Handsfree Calling for Home Stereo Sound System Car MP3 Headphones TV PC Computer

Features: Better
Sound Quality: CSR 4.1 bluetooth chip and A2DP noise cancellation technology is applied to guarantee that you can enjoy HIFI stereo sound from smartphone/tablet or any bluetooth-enabled devices.
Long Playing Time: Built-in 300mAh battery ensures up to 10 hours working time, you can enjoy wireless free all day long. Only needs about two hours to fully charged.
Easy to Use: Pair it with your bluetooth-enabled phone, tablet or laptop, and plug your headset or connect it with the speaker (without bluetooth function) via 3.5 mm audio cable, then you are free to listen to music. Dual 3.5 mm
Aux Output: With two aux output ports, you can connect two speakers headphones or other devices at the same time. It can transmits up to 20 meters (66 feet) away with line of sight.
Wide Compatibility: It is compatible with most smartphones and Bluetooth electronics, ideal for home or vehicle audio systems and portable audio devices. Mini wireless Bluetooth Receiver The Bluetooth 4.1 Receiver and Adapter is your instant Bluetooth upgrade! It is easy to pair, lasts up to 10 hours per charge, and delivers high quality sound. Turn your wired speakers or headphones into Bluetooth enabled devices. Bluetooth paring-connect by aux cable After the bluetooth receiver is on, the blue light will flash fast, enable your phone bluetooth and search for the device named “BT-B7”, pair the two devices, when the blue light flash slowly, it means that they have been connected successfully. It remembers up to 3 devices for automatic pairing and can auto connect the last one as soon as it is power on. After bluetooth pairing, please connect this device with your speaker or headphones by the audio cable included, then you can listen to your favorite music in your phone. Power on / off
Power on: Long press the middle button for 3S till the blue light flash fast.
Power off: Long press the middle button for 3S till the blue light flash is off. Charging When you use the device for the first time, please make it fully charged.
Charging time: about 2 hours. Red light on when charging, off for full Handsfree function Just short press the middle button to answer or hang up phone calls. Please make sure that you are near the mic in order to get better sound quality.
Specifications Bluetooth version: Bluetooth V 4.1
Bluetooth chip: CSR
Battery capacity: 300MAH
Charging time: about 2 hours
Working time: 10H
Bluetooth range: 20M
Transmission rate: 24Mbps
Charging port: Micro USB 5V/ 0.5A
Output: double 3.5MM aux output port
Package include: 1 x Mini Bluetooth Adapter 1 x 3.5MM Audio Cable 1 x Micro USB Charging Cable 1 x User Manual