I have had my mtw3 earbuds for just over 2 years. Granted, I had a few problems with them, but sennheiser always delivered their warranty. I sent my headphones back, and they were returned within a week of them receiving them the first time. The senmcond issue was a few weeks ago bit my warranty had already run out 2 weeks prior. Sennheiser have told me not to worry and they will replace the headphones this one time to the mtw4, even out of warranty. This act deserves recognition and I am really satisfied with their customer service.
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