[Clear Digital Display & Readouts]: automotive circuit tester with a highly clear LED digital backlit display for voltage readings, 0.1V resolution with ±0.2V accuracy gives you clearly visible digital readouts. Compared with LCD lights, this light tester is not affected by the brightness of light, so that be clearly read in daytime or dark areas. [Extended Spring Wire with Alligator Clip]: Maximum extended to 110 inch long enough spring wire increases flexibility and a wide measuring area when testing, anti-bending design of the tail wire makes no worry about bad contact of . Along with large size alligator clip for easy one-hand operation. [Bidirectional indicating light]: There is a bidirectional light emitting diode on the circuit board for polarity indication, red light indicates positive polarity & green light indicates negative polarity. You can attach the alligator clamp either to negative or positive ground, while using the probe to touch the other side. [Computer Save]: This premium car fuse tester has a built-in circuit board chip, and more than traditional test lights. Equipped with insulation protective cover, it provides better grip and insulation protection against . This circuit board with line protection function, which is and more burn-. [Widely Use]: auto electric tester pen is ideal for checking vehicles electrical circuits. long probe is used to pierce wires and reach into narrow areas, quickly check automotive headlights, taillights, turn signal circuits, faulty sockets, connections, fuses, broken wires and more, suitable for your daily use. Colour:Photo Color Material:Plastic Package Contents: 2x Electric Test Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.