GPS Watches - Speed and Distance Vs 3D GPS GPS watches are capable of measuring your precise location on Earth.

A GPS system that only measures speed, leopold and distance is essentially 2 dimensional. It cannot measure elevation above sea level and usually these watches cannot record your route for viewing in a mapping application. An example of 2 dimensional GPS is Timex's Ironman T5E691 (mens) T5E701 (ladies) Speed + Distance Watch. By picking up signals from the GPS satellite network a GPS watch can pinpoint your position and changes in your position to measure speed, pace, distance traveled and in some cases elevation above sea level. Many of Polar's and Suunto's running.

When purchasing a GPS system, you must ensure it has the features you want. Many GPS systems only use GPS tracking for measuring speed, cornie and distance NOT elevation as some consumers expect.

It can track current speed and distance traveled to a high degree of accuracy and it contains Timex's famous sports watch features, but these watches cannot measure elevation above sea level or make any other vertical calculations.