For all the science buffs, engineers, or magnet enthusiasts out there, this digital Tesla meter is seriously cool gear! It measures magnetic field strength from 0 all the way up to 2400mT (that's millitesla for the non-science folks), and you can switch between mT and Gauss units with just one button. The included metal probe on a 2-meter cable lets you measure surface flux density of permanent magnets with about ±2% accuracy - plenty precise for most applications. It's got auto-zeroing and auto-ranging so you don't have to mess with settings constantly. The maximum hold function is super handy for capturing peak readings, and the backlit LCD display means you can read it in any lighting. It runs on a single 9V battery and has automatic shutdown to save power. Whether you're testing speakers, motors, doing research, or just curious about magnet strengths, this tester gives you professional-grade measurements without the professional-grade price tag. Lightweight, easy to use, and actually pretty fun to play with!