Special 40A high accuracy AC/DC high measure, 1.6% accuracy, 0.01A resolution Small body and jaws fit perfectly in your hand and into tight places Large, backlit display is easy-to-see in less than ideal conditions In-rush current function (319) for measuring starting current for motors, lighting, etc. Measuring current Frequency (319) Resolution up to 0.01A and 0.1 V Measures AC/DC current to 1000 A (319) Measures AC/DC volts to 600 V Resistance measurement to 4000 ? Continuity for quick checking of shorts Auto-shut-off maximizes battery life so the meter works when you need it Display hold function