Garmin SDM4 sensor (Foot Pod) for Forerunner 305 / 310XT / 405 / 405CX / 60 and Edge 305/705 Black (Electronics)
Ideal for Garmin ANT + compatible watches, even those with GPS. Indeed, the pedometer gives a much more reliable instantaneous speed that the speed given by my GPS watch (405CX in my case), which is updated only every 4 seconds. My 405CX simultaneous