Las correas con que viene son de buena calidad, fácil de instalar como cualquier correa sin embargo el bloqueador al menor descuido se cae o suelta de la correa cuando uno no esta usando el reloj, por eso le doy menos puntaje.This band is comfortable and durable. Before I bought this I was having wrist pain after wearing my Apple Watch for more than 10 hours. Now I can wear 24 hours a day with no pain.Although it is not something that you may never know is working, I trust the company. I know the microwaves or radiation from the watch can be dangerous, and if this watch band can neutralize the dangerous waves, it is a good thing. I spoke to customer service and they assured me it does what it is designed to do. It is comfortable to wear, and it looks nice. I gave it 4 stars because there is no way to know if it is workingFit is great! I’ve been wearing this and I love the idea behind it, but what is actually helping to reduce emf radiation? Is it the small metal strip on the band and/or the band itself? The description doesn’t specify. Would be nice to verify with an emf reader... or even some evidence based research from the company.It fits on the Watch well and is comfortable. I’m not sure if it helps because I started switching wrists as well. I do feel better.Fits perfect!Band attaches easily to the watch, I likethat it has notches to fasten the band together and no worries of opening up and falling off your wrist.The EMF Harmonizer seems to be working, not tested. I have the white band and it’s very easy to keep clean.I really like the watch band. Though my favorite watch band is one I chose at the Apple store, this band is handsome and I hope it helps lesson harmful energy coming From my iwatch.I have worn this watch band for 9 months and now both straps have broke that hold down the big strap. Disappointed.