I am not sure if the heart rate monitor fully works properly. It doesn't show up on my list of possible Bluetooth connections, and the only app I was able to pair it with was Strava. You may be able to attach a Polar or Wahoo sensor to the bra instead if the snap locations match up (but I don't know if they do or don't though,so don't take my word for it ).
Letsfit TW2PINK 1.78 Waterproof Bluetooth Fitness Smartwatch with Heart Rate Monitor - Pink
polar heart monitor - Gem
Heart Rate Monitors
Garmin debuts a 'first of its kind' heart rate monitor that works with sports bras
I am not sure if the heart rate monitor fully works properly. It doesn't show up on my list of possible Bluetooth connections, and the only app I was
Mi Pulse Pink/Gray Smart Sports Bra with Heart Rate Monitor Attachment
Heart Rate and Sleep Monitoring: The Fitness Tracker monitors your heart rate automatically all day, and you can select manual mode through the App.
Fitness Tracker Watch with Heart Rate Monitor, Activity Tracker with Pedometer, Sleep Monitor, Calories & Step Counter, IP68 Waterproof Smart Watch
Buy E18 Sport Smart Watch For IPhone Heart Rate Monitor Bluetooth Smartwatch Single Touch Fitness Band For Women Men at Aliexpress for . Find more ,
E18 Sport Smart Watch For IPhone Heart Rate Monitor Bluetooth Smartwatch Single Touch Fitness Band For Women Men
polar heart monitor - Gem
Heart Rate Monitor Sports Bra
Helen's Closet (@mikneleh)