1、[Stable Response Speed] Bluetooth V5.0 is adopted, which has better and stable response speed than the previous version, automatically pairs the connection. 2、[3.5mm Plug] 3.5mm plug can connect audio devices such as cars, sound effects without Bluetooth through aux interface to make them have Bluetooth function. 3、[Pure Sound] Anti current interference circuit design can effectively isolate the "squeak" caused by current and make the sound quality purer. Barrier free linear is about 10m / 33ft transmission. 4、[Hands Free Call and Noise Reduction] Support hands free call and release both hands to make driving safer. Built in HD noise reduction microphone, clear incoming calls. 5、[Memory Connection] After the first connection, another boot can automatically pair the connection. USB direct power supply, no need to worry about insufficient power and battery life. Item Type: Car Transmitter Material: Plastic Cable Length: Approx. 35cm / 13.8in (unstretched), Approx. 110cm / 43.3in(after stretching) Output Interface: 3.5mm Bluetooth Version: 5.0 Bluetooth Name: EB01 Transmission Distance: Approx. 10m / 33ft (barrier free) 1 x Transmitter