Garmin Hrm-dual

"The HRM-Dual from Garmin is a premium heart ratechest strap that gives you the ability to transmit your heart rate data in real time via ANT+u00ae and Bluetoothu00ae Low Energy. This technology allows you to track your fitness goals both indoors and outdoors or even during online workouts. Whether you are training on your Garmin device, in onlinetraining apps like Zwift or on compatible fitness devices, the HRM-Dual continuously provides accurate data to optimize your performance."
"The belt is soft, adjustable and comfortable to wear, making it perfect for long training sessions. The belt is also washable, as the heart rate module can be easily removedu00e4sst. The long battery life of up to 3.5 years ensures that you don't have to worry about frequent replacements and can concentrate fully on your training."
"With its unisex features, the HRM-Dual is ideal for all genders and specifically designed for runners who want to take their training performance to the next level. Experience the freedom to train anywhere and still have accurate heart rate data at your fingertips"