This tester is designed to distinguish diamond, moissanite from other fake stones quickly. It has fine elastic tipped probe for testing and able to identify stones as small as 2pt.

Features:
Easy operation without necessary to adjust LED bar garph via volume control to match stones of different sizes like that used in other diamond tester models
Could be powered by AAA batteries, NiMH batteries or an AC power adaptor (not included in the set)
Can distinguised stoned as small as 2 pt
Low battery detector
Equipped with an elastic probe tip
Built in metal detector
Automatic power off
With "beep" sound indicator
Rubber paint finish
Factory Calibrated

Specifications:
Working Voltage: DC 4.5V, AAA batteries or NI-MH battery or AC adaptor (110~240V, DC 4.2V) (not included in the set)
Probe warm up time: about 25 seconds
Working time: about 2 hours of continous use
Net weight: 65g (not including batteries)
Tester Size: 173 x 42 x 22mm (L x W x D)
Working Temperature: 18 ~ 30°C

Set Includes:
1 x Diamond Tester
1 x Testing Base
English User Manual
Carrying Case
Standard Factory Package

💎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: Gem Stone Tester 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 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.