With the Garmin HRM-Fit we no longer have to deal with incorrect readings or uncomfortable digging when wearing a heart rate monitor over or under our sports bra. The slim clip-on design works with our medium- and high-impact sports bras to deliver accurate readings and a comfortable wear throughout our runs. With a battery life of up to one year this monitor handles our long runs with ease and the real-time data transmits directly to our watch ensuring we stay on target.