You have to hand it to Jabra-the company has invested in an app that works with multiple models of its headphones, and it's the rare case in which the app actually improves the user experience to a notable degree.
Powerful bass and sculpted highs; Customizable EQ; Dust- and moisture-resistant design; Secure in-ear fit; Counts steps
Auto-pair process can be cumbersome, with only one earpiece pairing at times; Not for purists seeking accurate audio