Has echo rejection; others dont. Y no, no es mi oido el problema porque lo probe con varias personas y con medidores. I think I had higher expectations after using these others. I wear them in the office, i wear them hiking , i wear them biking, i wear them in the water, on the kayak, fishing, i wear them gardening. We really like the app and find it useful. But the mic just suddenly stopped working. The highs are noticeable, very slightly flat but thats me being picky. There is a gap from the end of my toes to the front of the sandals. my big gripe with this stick would be software and better compatability! Wenn man mag, kann man für den Transport den im Zubehör enthaltenen Beutel verwenden.