You are looking at Timex's GPS Speed and Distance Sensor. This product retails for $159.99, but can be purchased at a discount from our retail partner. It is available in Steel.
Add GPS sensor to any compatible Timex Ironman training watch for more precise data....
Read more about Timex's GPS Speed and Distance Sensor
This product is in our Running Heart Rate Monitors department. To see more products in this category, or other Gear & Nutrition items, please try our selection of running shoes and gear, listed by category below. We have many other products by Timex in our running shoes and gear store.