Polar H10 Heart Rate Sensor - Black Latch Beta and they replace the standard

and they replace the standard axle skewer

Lens Color : Prizm Sapphire Polarized

Prizm Snow Sapphire Iridium

- Optimized ergonomic 2-finger brake lever

Sonar history rewind allows you to scroll back through sonar images to mark waypoints you originally may have missed

Polar H10 Heart Rate Sensor - Black Latch Beta and they replace the standardPolar H10 Heart Rate Sensor When it comes to accuracy and connectivity, Polar H10 heart rate sensor is the go to choice. Monitor your heart rate with maximum precision and connect your heart rate to a wide variety of training devices with Bluetooth and ANT+. With Polar H10, heart rate monitoring is more accurate and adaptable than ever. The Power of Accuracy The most accurate heart rate sensor in Polar's history, Polar H10 is the gold standard in all