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I needed to replace an older rangefinder, so I purchased one of the cheapo ~$100 versions available on Amazon. It looked nice, but it simply didn't work reliably, and frequently couldn't locate a pin. I returned it, and got this Callaway unit. It's great. Compact, bright viewfinder, picks up pins reliably. And I like the little birdie chirp it gives when it spots the pin. It does occasionally miss a pin and give the distance to a tree that was in the frame, so you always have to be prepared to do a reality-check on a surprisingly long distance. Step off to the side a couple of yards, and repeat the reading.
Si el campo en el que juegas NO ES PLANO entonces recomiendo muchisimo este finder con capacidad para medir distancias reales con la funcion de SLOPE. Una maravilla. Si juegas en campos planos, con cualquier GPS y app del celular es suficiente.