By Andrew Liszewski
If your jogging or running pedometer was a cereal premium, or came as part of a happy meal, there’s a good chance it may not be as accurate as the Radar Tacho RDS II. In fact, there’s a good chance that even the high-end models available at your local sporting goods store aren’t as accurate as the RDS II which uses radar just like your local meteorologists, cops and major league baseball scouts.
Made by Siemens and originally developed at the Fraunhofer Institute in Germany, the Radar Tacho emits microwaves and measures the echos bouncing back from every surface around you to gauge your current, maximum and average speeds as well as your daily mileage. And because it does rely on radar, the Pro-Idee website recommends against using it on mirrored or reflecting surfaces, like jogging across a lake. And I have to assume that running on top of an SR-71 or F-117 would also produce inaccurate results, which is unfortunate because with a price tag of about $205 you’d expect to be getting a pedometer that couldn’t be foiled by 30-40 year old stealth technologies.