Features: In the voice prompt, can be done automatically in response to individual measurement, measurement results will be sent LCD display, testing human nervous system reaction speed. Random touch lights instructions measured simple reaction time and reaction time. Range: 0 ms-9999ms Accuracy: 0.1% Resolution: 1 ms Show: Large-screen LCD display 192 * 64 Chinese lattice, and ultimately results in serial communications technologies adopted by wireless transmission to a computer network.