Firstly, let me say that the device works. No question about it. Use it every day, and you will lose weight. However, the device is buggy and prone to faults, and customer service is sub-par at best. I have had my headset for two years. It developed a fault shortly after it was out of warranty, and the company charged me £90 to get it repaired. Less than a year later my headset has developed another fault, and this time I can't get in touch with anyone, because my emails and messages are going unanswered. There's no phone number to ring either, and the live chat on the website is never staffed. Essentially, buying a Modius headset is a bit of a gamble - if it works it's brilliant, but if you have any problems you're on your own.