The PowerBeats3 Wireless is a decent step up over its predecessor, but it's no bargain in an increasingly crowded market for wireless sports headphones.
The Beats Powerbeats3 Wireless offers an improved fit, very good sound for Bluetooth sports headphone, reliable operation, and strong battery life (12 hours), thanks to Apple's W1 chip; Pairing is dead-simple for iOS users and the headphones also work just fine with Android phones.
Competing models are just as good or better and cost less; not a major upgrade over Powerbeats2 Wireless.