There are only two major brands you need to consider if you’re in the market for a pair of premium over-ear wireless headphones with top-notch noise cancellation technology and a reasonable price point. We’re talking about Sony and Bose, whose tremendously well-reviewed products are often impossible to set apart in terms of sound quality, comfort, and other key features.

But it’s actually Bose that sells them alongside the same 1-year warranty typically offered with untouched products. The manufacturer also explains the “renewal” process these headphones have gone through before being put on sale again, which includes thorough inspections and testing to ensure compliance to some “strict performance and sound quality standards.” 

The company promises you won’t be able to notice any difference between these heavily discounted accessories and brand-new units in terms of both their visual appearance and especially audio performance. Speaking of, it’s also important to point out that the Bose QuietComfort 35 Series I and II are practically identical when it comes to specs and features… save for voice assistance.