Garmin 010-10997-00 HR Monitor Belt, Regular (Black)

Compatible with the Edge 305HR and the Edgecad
Heart beats per minute wirelessly transmitted to the forerunner 50
Effectively tracks and records your heart rate while you workout
Provides instant feedback about how hard your heart is working
0.35 pounds (WxLxH) 2.5-inch x 3.0-inch x 2.74-inch