This is the PRO-57, a highly versatile, economically-priced, hand-held Tweezer Digital Multimeter, with the same features as a normal DMM. It has a display of 3000 counts, 4 times per second sampling, automatic polarity with negative indication (-), battery status and over-range indication. 

The PRO-57 can measure continuity, capacitance and resistance, with an accuracy of 3% - 5%. It also has a diode test function.

This DMM tweezer is really easy to carry and use due to its size and weight. The PRO-57 uses one CR2032 battery that will last approximately 100 hours and is accessible from the back cover.