* Premium heart rate strap transmits real-time heart rate data over ANT ® connectivity and BLUETOOTH® wireless technology to communicate with Garmin GPS watches, bike computers and online training apps such as Zwift —included on phones or tablets.* Soft strap is comfortable, adjustable and washable — simply remove the heart rate module.* Provides reliable, real-time heart rate data for maintaining or improving fitness when training indoors, outdoors or even online.