I am selling my Radsone EarStudio ES100. It's in excellent condition and works perfectly running the latest firmware. I have been using the partial-charging feature since it was added to maximise the life of the battery. Comes with a short copper MMCX cable made by Oscar Stuart who is active on the head-fi forums. The cable is 10cm braided splitting to 35cm twisted. The EarStudio has amazing features you can read about here: https://www.radsone.com/earstudio I am selling it because I've just tried the Shure BT2 cable and I prefer it for the simple reason that it has a better microphone. I wish I could keep both as I love the EarStudio for music but I just can't afford to do so. £80 posted to UK via Special Delivery. I will post overseas at buyers cost for a tracked service. Payment by paypal only. Ebay feedback showing I'm an honest guy - https://www.ebay.co.uk/usr/shp0ngled (happy to prove this is my account if requested).