Jabra Sport Pulse Wireless, billed as the world’s first...

Jabra Sport Pulse Wireless, billed as the world’s first stereo earbuds with a built-in biometric heart rate monitor, is available for pre-order for $199 at Jabra’s online store, the company said Wednesday. The earbuds also will be available in store and online at Best Buy starting in late September, it said. Jabra commissioned Campbell University in Buies Creek, North Carolina, to verify the accuracy of the heart rate monitor in the earbuds, it said. Runners on a treadmill were tested on the earbuds against a medical electrocardiogram machine, it said. The results showed a 99.2 percent correlation rate between the two devices, it said. Jabra called that “extraordinary accuracy” for the earbuds.