This is the best non-GPS speed and distance HRMs out there! I am just too simple of a person to benefit from it. It was lightly used for 2 months, in MINT Condition as well. I baby my gear. Comes w/ watch, S3 stride sensor, heart rate strap, polar training software. Has alot of features: run cadence, HR zones, stride length, program intervals, pace per mile or km and a lot more.
retails for 499 asking 300 shipped to your door. Saving 200 bucks!

Would also trade for Dura Ace STI's 10 Speed, Rear HED 90 700c Shimano, or bike travel case