Orange Theory chest strap monitor in excellent condition. I used it for 3 months but have moved on to another workout. More comfortable and reliable than the armbands that are often used, so you can see your heart rate changes faster and more accurately. Easy on, easy off with a slide hinge that connects the strap to the monitor. All you have to do is take it to your gym and they’ll load it to your account. Splash some water on it, toss it on, and go to work!