I am very disappointed to discover when I recieved my package that there is no mains plug included,this wasn't made obvious in the advert.I got in touch and was eventually told that no it's not included,so I then got in touch again to ask which plug I needed to buy and how much would it cost me,only to be told it was out of stock and not due back in untiljune/July,so I then asked if you could tell me which plug I needed to but from a different place,so far no reply.My concern is that without a plug I cannot test this product and if I have to wait until June/July if they don't work you will tell me I have had them too long to get a refund.This was my second purchase from you in a short period of time.Iwill not be recommending your company to family or friends,or purchasing from you again.