External microphone is designed to fit in-dash receivers with built-in Bluetooth which will require the 3.5 mm jack microphone input. The microphone will provide better performance in noisy environments. 3.5mm Jack connector is compatible with Sony Kenwood Alpine Bluetooth Car Stereo`s & Sat Nav`s.
Please note: 2.5 mm is required for other head units like Pioneer and others -Please see my other listings.
Wire length-3m (9`10")
Free delivery to UK.