I bought this tuner from RST Music via Amazon at Christmas for my son and within 4 months it stopped working correctly. We contacted the seller and was told to send the item back to them. It cost around £50.00 so I sent it recorded delivery. It was received 30 April by them and we have heard nothing from them since. For an item that is not used daily 4 months is no time at all and I am very annoyed. I thought I was safe shopping on Amazon but obviously not as everything has to be done through the seller and not Amazon so beware go to your local music shop and buy another make of Tuner Good Luck.