They’re built tough inside and out. With overvoltage protection to guard against spikes up to 6 kV, and safety ratings to prove it. They even protect against measuring voltage if the knob is accidentally set on ohms. Plus, their rugged, over molded body armor case offers constant protection no matter how much you throw them around. The tapered design fits more easily in your hand, pocket, and tool box. The high-contrast displays are 20% larger, with extra large characters that are easy to read from a distance. Plus, there’s easier access which automatically captures the measurement, beeps, and locks it on the digital display for later viewing.