If the thing could not have one flaw. In the finder optical system inside buzzes around a foreign body. This in itself is not tragic, does the thing anyway yes without hesitation, but I want to have it replaced anyway. The measurement accuracy is quite good. What are a few feet at 150m. Hab 250 compared the device with a professional unit B ... and because it cuts pretty well off. This professional device needs compared to a good reflector Bresser and where there is already in botany. Since the Bresser plays its strength to the full. Trees and grass are not a big problem.