Easily add Bluetooth to your car audio systems, home stereos, speakers, wired headphones via the auxiliary 3.5mm AUX socket - Minimal footprint slim design with 3.5 mm plug. Plug and play, easy setup, one button operation, clear status indicator. Latest version 5.0 of Bluetooth wireless communication standard, Low latency, Noise cancelling, improved speed and range, dual audio and backwards compatible. CVC8.0 Noise Cancellation and DSP technologies cancel echo and block out intrusive background noise and create lossless audio CD-class quality music. Hands-free Bluetooth call and navigator voice via built-in microphone; 4-hour continuous work via the built-in li-ion rechargeable 140mAh battery. Make easily your TV / projector Bluetooth-enabled by using the transmitter (Tx) mode via the 3.5mm audio jack. In the title and we have provided details of the product including its features and specifications, please note the size and dimensions of the product to ensure it meets your needs. Warm reminder: Due to lighting effects, monitor brightness, manual measurement, etc., there may be some slight differences in color and size between photos and actual items. Sincerely hope you can understand. During the shopping process, if you have any questions, please feel free to consult us, we will reply to you within 24 hours, I wish you a happy shopping!