Ok guys, first thing first- I'm no audiophile (or whatever those music aficionados are called!)So, this review is by a normal guy for normal users.I've added close up photos for reference.The packing: Excellent. Very neatly packed, and very classy. (I had to struggle while opening the inner packet. Couldn't notice the cellotape which was holding it. Stupid me 🙄)The build quality- It's exceptionally well built headset. Everything oozes quality. JBL have really put in their best in this product.Audio quality (that's what matters finally !) : I'm just blown away by the quality of sound! As I said earlier, I'm no audiophile. So, things like highs, lows, mids , treble etc don't make much sense to me. I already own Sony XB450 and Sennheiser 212HD. Both are "over-the-ear" wired types. So, they are supposed to be having bigger drivers etc and hence better sound quality. BUT. I actually feel this Endurance run gives them a run for money.. The bass was a little less, yes, but you can always increase bass with your music app settings. I'm typing this right now while listening to "Teri mitti" from Kesari. The song has a different level of effect with these earphones! And a major reason behind that is the noise cancellation. Coming on that now.Noise cancellation- I had bought JBL 600 BTNC with active noise cancellation last month. The Noise cancellation was so bad and sound quality so sub-standard that I was forced to return it... But, this set is a different beast! Of course, it has passive noise cancellation. However, even with medium volume, I can't hear anything spoken by my wife (that's of course not good for my health and well being in the long run! Haha). The noise blocking by this set is phenomenal to say the least. You can barely hear anything from outside unless it's really loud.Comfort: have been listening to music for last 3 hours. No pain in ears at all (ear pain/discomfort is so common with most of earphones). The earplugs don't come out at all. Exceptionally snug fit.Tried Google now. "Ok Google" Works like a charm.Very easy to pair, took me barely 5 seconds the first time! Range also seems pretty good, but to be frank, haven't checked from much distance.Buttons on the band are easy to use, and I got used to them within no time. The central button (for play/pause or call) is slightly elevated than the volume buttons on both side of it, so you can touch and feel it. Can't go wrong. Pressing the volume + button for 2 seconds plays the next track (and similar for volume-). Again, intuitive and easy to use.I can go on and on. However, I'm not getting paid for this review. So, need to end this now.😉Just one crib- there should be a way to switch off the blue status LED light, it irritates eyes in the dark (I know, that's a very very minor hassle. However, if I've missed and there really IS some way, do let me know).Thanks for reading (if you had the patience to read till here!). By the way, it's supposed to be splash resistant as well. No, I'm not going to check that.Go, buy it, wear it and go for a run. Regularly. Let's get fitter ! :-)