High-accuracy Hall sensor detects 0-25,000 Gs (0-2500 mT) with +/- 1%-5% accuracy and 0.01 Gs/mT resolution, perfect for lab and industrial use. Audible/LED alarms for threshold warnings + stores 50 measurement sets for tracking in magnet testing, QC, or research. Features auto/manual , flip-screen display, unit switching (Gs/mT, km/h/mph), and pole detection for versatile operation. 16-hour battery life, Type-C charging, and (100g) design for fieldwork, factories, or labs. Measures magnet strength, motor/coil fields, speed/distance (via wheel diameter input), and environmental EMF with QC testing mode. Color: As Shown Material: Metal+Plastic Package Contents: 1 pcs * high accuracy multimeter 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.