Speed Sensor

The bulky horn antenna of a traditional radar gun has been compressed down to a square panel about 40 millimeters on a side. Intended for athletes and coaches looking to improve performance, the Pocket Radar uses Doppler radar to measure the speed of an object to within 1.6 kilometers per hour.

Product: Pocket Radar
Cost: $250
Availability: Spring 2010
Source: pocketradar.com
Companies: Pocket Radar