The Smart-TRAK ST102 is the smart choice for underground locating professionals. Large LCD screen for visual search results: 0-99 numeric indicator with signal strength bar graph, North/South polarity, sensitivity, volume, and battery level indicator. Precision-crafted superior ergonomics and balanced design for one-handed operation. Waterproof tube and tip with robust co-molded housing that is water resistant and dust proof to ensure years of dependable operation.