- Measures your heart rate, cadence & calories
- No chest strap required
- Professional dri-fit hat design
- Advanced optical sensor
- Dual module with Bluetooth 4.0 and ANT+ connectivity
- If you don’t like wearing a hat, you can use the Garmin Forerunner 235 watch which will monitor you heart rate and has a lot of other functions you will need.
Check price on Amazon.com