This premium heart rate strap transmits real-time heart rate data over ANT connectivity and Bluetooth Low Energy technology, giving you more options to train indoors, outdoors, or even online. With it, you will be able to consistently receive accurate heart rate on your Garmin device, in online training apps such as Zwift or even the compatible fitness equipment in your favorite class at the gym. So no matter how you like to train you’ll get the accurate, real-time heart rate you need to take your performance to the next level. The Heart Rate Monitor Dual features a soft strap that is comfortable, adjustable, and washable, simply remove the heart rate module. No need to worry about running out of juice, the battery lasts for up to 3.5 years!