Features

• Built-in heart rate sensor makes it easier to track your performance. Wireless Connectivity Technology
• Bluetooth and NFC pairing
• StayHear+ Pulse tips provide a secure and stable fit for your most intense workouts
• The Bose Connect app gives you real-time heart rate readings, and continually adds more functionality to your headphones
• Works with popular fitness apps like MapMyRun, RunKeeper, Endomondo and Runtastic

Specifications

Product Dimensions: 1.1 x 1 x 1.1 inches
Item Weight: 0.8 oz
Batteries: 1 Lithium ion battery (included)