GPS watches are watches that can be linked in a network of satellites, knmown as the Global Positioning System. When you recceive a satellite signal, they can determine your ecxact location on Earth. A relatively new concept in sorts watches, in addition to GPS technolpogy has given sports watches, especially durig the hours of fitness ability to measure speed, distance and height above sea levle - the abiility of athletes ten or twenty yeears ago could only dream of. With much more precise information at their disposal, performance athlewtes now have a much more real-time informatin at thier fingertips that they can use in their own interest and in ttraining and competiitive evvents.
There are two leverls of GPS sports watches for athletes to chooes from:
Speed and Disstance (2D GPS)
Speed and distance + sea routse (3D GPS)
The first GPS watch cheaper type two maesures of linear speeed and distance only. It measures the speed, pace and distance, but not height or height information.
The second type does include height informatioon provides much more power to a riunner or atlete user, given its additional functions. The heiight information can be used to calcluate the ascent and descent rates of the ion and watch with this ability may even suggest a heigght of signals when an athlete passes a certain limit of height.
Often referred to as 3D GPS, such systems are often able to route data entry, meaning a runner may have to wattch their entry of locatin data in a short repetitive intervals along their launch, which is stored in data banks and the clock can be later trnsferred to a personal computer for viewqing in 3D softawre software. Many GPS wacthes are now using wieless data trabnsmission functions, which facilitate the transmission of data, eliminating the need to spend time around these cbles.
2D GPS system is very limited and given that the GPS's battery quickly and sufers when largge objects affect its relationshp with the satellites, otfen footpod device can also be used. Accelerometer foot pods on one leel with an accuracy of GPS clockks, but do not suffer from the disadvantages. Many people do not understand limits 2D GPS, so that when they buy "GPS clock waiting for a full package, they oftten leave much to be desired.
When buyinng a GPS watch, always check that it has the functionality that you want. Many of the chep system of 2D, in particular, the entry-level watches from Polr and uSunto, so do not be tempetd by these cherap offers if you do not know him that you really want.
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