Guarder Speed 2000 Chrono
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This is the Gaurder Speeder 2000 Chrono. This particular chrono was designed for airsoft purposes and uses a set of electronic eyes to calculate a projectiles velocity. Radar and sound chronographs can be an alternative to the electronic eye but there can be a variation of results because of so many uncontrolled factors. This version really makes it very simple and gives accurate results so that there is no more guessing when it comes to the speed of your weapon. I purchased this particular chrono from Evike.com for $139.99.