Train indoors, outdoors or even online with the Garmin HRM-Dual™ monitor. In addition to ANT+® connectivity, this comfortable, soft strap heart rate monitor transmits real-time heart rate data over Bluetooth® Low Energy technology. That lets you connect with third-party training apps such as Zwift, GPS watches, bike computers and even the compatible fitness equipment in your favourite class at the gym plus your Garmin GPS watch or bike computer. Train year round, and get the accurate, real-time heart rate data you need to take your performance to the next level. You won't even need to think about replacing the battery for up to 3.5 years.