JBL has Under Armour Sport Wireless Heart Rate Heart rate monitoring, wireless in-ear headphones for athletes for $49.95 ($150 off) + Free 2nd Day Air Shipping.
In-Ear Heart Rate
Convenient, comfortable in-ear technology developed by experts and tested by athletes.
Hear spoken on-demand heart rate updates and optimize your endurance training session to achieve your goals – just touch the right earbud.
With UA Record™, your dashboard for connected fitness, you can view in-workout training analysis and customized heart rate feedback so you can improve performance.
... and many other features.