To use this Countryman E6 earset cable, simply connect it to your device using the LEMO 3 - pin connector. It's a great choice for getting sound to your ears. As we couldn't test this unit, it's a good idea to check for proper connection and audio quality when you first use it. For maintenance, keep it away from sharp objects to avoid cutting the cable. Also, store it in a cool and dry place when not in use to prevent damage.