BUILT IN METAL DETECTOR: Jewelry Diamond Testers Keep your work environment safe and secure with the built-in metal detector, which ensures that no unwanted metals or debris are left behind

FAST WARM UP TIME: Diamond Tester Professional With a quick and efficient warm up time of only about 25 seconds, you can get to work right away and make the most of your valuable time

AUDIBLE ALERTS: Jeweler Diamond Tool Kit The beep sound indicator lets you know when the device is ready to use, so you can stay focused on your work and not waste time waiting for it to warm up

OPTIMAL EFFICIENCY: Our Diamond Tester Pen is designed with your efficiency in mind, so you can work quickly and effectively without sacrificing quality. Its user-friendly features and intuitive design make it the perfect choice for anyone looking to maximize their productivity

ACCURATE AND RELIABLE TESTING TOOLS: Professional Diamond Moissanite Tester Specifically designed to quickly and easily distinguish between diamonds, moissanites, and other fake stones. It features a fine, elastic-tipped probe that is capable of testing stones as small as 2pt

Note: Could be powered by AAA alkaline batteries, NiMH batteries or an AC power adaptor (all are not included in the set)