This product is either discontinued or we cannot get that from suppliers.
Garmin Hrm-pro 010-12955-00, Water Rating 5 ATM, Operating Temperature 14F-122 degrees F, Range-3m, Compatibility ANT plus, Bluetooth.
The Garmin HRM-PRO heat rate strap transmits real-time heart rate data over ANT+® connectivity and BLUETOOTH® Low Energy technology, giving you more training options.