Features: 1. Small and portable, easy to carry. 2. CSR8670 wireless audio solution, sensing distance up to 10M, lossless sound quality, signal stability 3. Equipped with a battery with a capacity of 300 mA for more than 100 hours of continuous operation. 4. Easy to install and easy to operate. 5. Support Bluetooth transmission and Bluetooth receiving mode. Specifications: Bluetooth version: V4.1 Distance: 10M Input voltage: DC5V Charging time: 2 hours Use time: 10 hours or more Battery capacity: 300mAh Bluetooth Transmitter usage: 1. Transmit the sound output from the TV/computer to the Bluetooth headset via Bluetooth to achieve more privacy and no effect on others. 2. Transmit the sound output from the TV/computer to the Bluetooth speaker via Bluetooth for better sound quality and louder volume. Bluetooth Receiver usage: Turning a Bluetooth player with a 3.5mm audio interface without Bluetooth (such as a speaker) with Bluetooth receiving function into a Bluetooth speaker Package List: 1 * User Manual 1 * Charging Cable 1 * Transmitter Receiver 1 * Audio Cable 1、Small and portable, easy to carry. 2、CSR8670 wireless audio solution, sensing distance up to 10M, lossless sound quality, signal stability 3、Equipped with a battery with a capacity of 300 mA for more than 100 hours of continuous operation. 4、Easy to install and easy to operate. 5、Support Bluetooth transmission and Bluetooth receiving mode.