The Nike Triax 100 SDM is a simple to use speed and distance watch. The Nike Triax 100 SDM features Nike's patented speed sensor technology which uses a sensor to measure acceleration and deceleration hundreds of times per second. The technology is not disimilar to airbag control mechanisms.
The Nike Triax 100 SDM is light and durable using scratch resistant mineral glass crystal. The speed sensor attaches to shoelaces to provide accurate speed and distance information without you being concious of it. The Data mode records laps, splits and distance information for 100 laps. In addition to maximum speed time in training zone, and total distance traveled.
The graph mode is first class, providing you with a graphical analysis of speed and distance over adjustable time intervals. Overall an excellent Speed and Distance Monitor