I bought these headphones and unfortunately had to return them. There is this one thing that I just can't live with, all audio prompts that these headphones make are in a happy female voice with British accent. She's louder than my music at the highest volume and it took me one day to start hating the product. Play/Pause and volume controls are on the same switch, so trying to click to go to next track it often results in a volume up motion and them the happy British lady yells in your ears "VOLUME MAX!!!", I'm not kidding, it's ridiculously goofy and annoying.
On the positive note, these headphones sound freaking amazing! One of the most balanced and cleanest sounding set I've ever tried, and I have tried quite a few. When talking about sound quality only, IMO they are better than Beats Solo 2 Wireless, Beast Studio Wireless, Bose QuietComfort 35 (barely), JBL Wireless headphones, B&W P5 Wireless (actually almost the same, but Sennheisers are louder) and Sennheiser Urbanite XL. Not as good as Momentum 2.0 Over the ear or wired Momentum versions, but close. As far as volume and loudness, the only louder headphones came from Beats and JBL, so if that's important, like it is to me, I recommend Beats Studio Wireless (The one I ended up with).
Design is both good and bad. They're beautifully crafted and all materials are premium. Retro inspired design is cool, but actually wearing them was weird. They extend really far our to the sides and appear super wide around your head, yet thin lines and small speakers make them look disproportional. So while the headphones are undeniably beautiful, I feel like they make me look ugly. My wife laughed when she saw me in them for the first time... and every time after.
At the end of the day, I loved the sound of these headphones so much, but didn't want to be seen wearing them at the same time, so I returned them and order a wired version to keep and use at home. It's cheaper and shouldn't have any voice prompts (I'm hoping, I'm still waiting for them). And for wireless headphones with great sound, design, quality and volume I bough Beats Studio Wireless. for the same price.