This instrument performs AC/DC voltage, resistance, capacitance, audible continuity, diode and frequency measurement. It has the functions of polarity indication, data hold, over range indication. It can be operated easily and is an ideal instrument tools. Features: Negative Jack: Connect the black watch pen to the COM jack, measure with the test pen and watch pen, and turn on to enter Auto mode. AC/DC Voltage Measure: Automatic identification, the watch pen is connected to the COM jack, and the circuit voltage value is measured. NCV Voltage Sensing: Select NCV mode, the closer the distance to the AC voltage, the more urgent the alarm sound. Line Breakpoint: In NCV mode, close to the measured line, determine the breakpoint position according to the signal strength. Fearless of the Dark: With high definition backlight and flashlight, suitable for dark environment. Specifications: Material: ABS + Metal AC Voltage: 0V-600V, 10mV, ±(2.0% of rdg + 5dgts) DC Voltage: 0V-600V, 0.1mV, ±(1.2% of rdg + 5dgts) Resistance: 0-40M, 0.1, ±(2.0% of rdg + 5dgts) Capacitor: 0nF-4mF, 10pF, ±(30% of rdg + 10dgts) Hz Frequency: 0Hz-4MHz, 0.01Hz, ±(2.0% of rdg + 10dgts) Buzzer: Yes NCV: Yes Line Breakpoint Lookup: Yes Auto Power Off: Yes Flashlight Lighting: Yes Low Power Prompt: Yes Data Retention: Yes Backlit Display: Yes Battery: 2 * AAA batteries (Not included) Max Count: 4000 counts Item Size: 163 * 30 * 26mm / 6.41 * 1.18 * 1.02in Item Weight: 38g / 1.34oz Package Weight: 84g / 2.96oz Package Size: 17 * 4.5 * 3.9cm / 6.69 * 1.77 * 1.53in Package List: 1 * Pen-Type Multimeter 1 * Watch Pen 1 * User Manual (English)