This is my 2nd unit in 6 years, and I was rather appalled to hear the first time that if the battery went bad, Bose would not cover it after one year. I would essentially have to pay $259 to replace it.
The brand has been a staple I go to when my earphones or headphones die on me. They last, and I have never had any major problem with them. This particular mode l blocks almost every single sound out, which makes me feel like I have been placed in a concert hall, instead of walking from Raffles Place to Shenton Way.