Unique 40A high-precision low current measurement--0.01A high-resolution, 1.6% high-precision measurement Starting current (inrush) functionality (319) allows measurement of the starting current of electrical and lighting equipment The clamps are slim, lightweight, and portable, making them ideal for use in small, confined spaces 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 Resolution up to 0.01A and 0.1 V Auto off function enhances battery life