What's the difference between the Powerbeats 2 and 3?
Differences include:
Up to 12 hours of battery life with Powerbeats3, which use Apple's power-efficient W1 chip (vs up to 6 hours of battery life with Powerbeats2).
A 5 minute fast charge for an hour's typical use (vs a 15 minute charge).
Improved ergonomic design.