Battery life, and sound quality is absolutely perfect. The earphones hold perfectly in place even during HIIT, and the sweat resistant makes it better than apple AirPods. The charging case is indeed a bit bulky, but doesn't marginalize the value of this earphones. yes, it is pricey, and could have been $50 less, but its beats!
Update: After 10 days of usage, so far the product has lived upto the standards. Fit is snug. I've been running, and training in the 90 degree Fahrenheit sun in Louisiana, no smell and issues due to sweat whatsoever. The phone call quality is still impeccable and helps reduce sound. batter life went on for unto 7 days with 90 minutes of usage everyday.