![11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X 11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X](https://pbs.twimg.com/media/CGwpF3RWQAAyeAy.jpg)
11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X
![Amazon.com : Garmin HRM-Dual Heart Rate Monitor - Premium & Real-Time Heart Rate Data via ANT & Bluetooth - Bundle with CR2032 Battery : Sports & Outdoors Amazon.com : Garmin HRM-Dual Heart Rate Monitor - Premium & Real-Time Heart Rate Data via ANT & Bluetooth - Bundle with CR2032 Battery : Sports & Outdoors](https://m.media-amazon.com/images/I/61rBU-e2PBL._AC_UF350,350_QL80_.jpg)
Amazon.com : Garmin HRM-Dual Heart Rate Monitor - Premium & Real-Time Heart Rate Data via ANT & Bluetooth - Bundle with CR2032 Battery : Sports & Outdoors
![MOOFIT HW401 Heart Rate Monitor Armband Bluetooth & ANT+ IP67 Waterproof Optical Heart Rate Sensor for Zwift, Wahoo, Endomondo MOOFIT HW401 Heart Rate Monitor Armband Bluetooth & ANT+ IP67 Waterproof Optical Heart Rate Sensor for Zwift, Wahoo, Endomondo](https://ae01.alicdn.com/kf/S43a51bf98c3849bdad65f866e0f4a486B.jpg_640x640q90.jpg)
MOOFIT HW401 Heart Rate Monitor Armband Bluetooth & ANT+ IP67 Waterproof Optical Heart Rate Sensor for Zwift, Wahoo, Endomondo
![Sensors | Free Full-Text | Comparison of Heart Rate Monitoring Accuracy between Chest Strap and Vest during Physical Training and Implications on Training Decisions Sensors | Free Full-Text | Comparison of Heart Rate Monitoring Accuracy between Chest Strap and Vest during Physical Training and Implications on Training Decisions](https://www.mdpi.com/sensors/sensors-21-08411/article_deploy/html/images/sensors-21-08411-g001.png)