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