I bought this product about 2 years ago. I was apprehensive to purchase as I had read mixed reviews but they fit the bill for what I needed. The order ended up taking a little long to ship than I preferred. Nonetheless, when they arrived they were in great packaging and were ready for use right away. I found the right fit for my ears and used them immediately for working out.
Regarding physical feel and use:
I usually do a mix of running and free-weight training (both strength and powerlifting). The headphones worked perfectly for me. I am a fairly sweaty person, and I actually prefer the physical tactile buttons that came with this version. Touch buttons always fritzed when I would sweat and try to change the song or change volume. This was a big plus for me.
They have held up to many accidental drops on the ground from head height. No damage or alteration to sound. They are also incredibly light considering the durable metal shell.
The buttons did take some getting used to, as you have to provide a bit of pressure to get them to engage. However, it takes a single session to get the hang of.
The only drawback on the physical use of them was that the screen protecting the inner speaker parts and the port that goes into your ear canal for sound would get dirty. Cleaning them required some fine motor skills, and sometimes the screen would pop out. The great thing is they come with replacement screens, so they should last a long time with a replacement every year or so.
Regarding the sound:
The sound is actually very good. The sound is clear and even throughout most frequencies. Obviously with ear buds you won't get heavy bass. But for someone who appreciates clarity over a bass-heavy sound, these are preferred. I actually enjoy the quality of the music considering they are an ear bud and not an over-ear device.
I did not really use the ambient sound feature, so I am not very knowledgeable on whether this feature was standout or at par with others. When I did use it, it met it's purpose.
The voice calling feature was seemingly clear on both my end and the person I was talking to on the other end of the call.
Overall, I really loved the headphones. I lost my old ones and figured I'd look for the same ones that I had. I scrolled to look at reviews and thought I'd payback the brand for some quality music during my workouts. Definitely highly recommended from me.