Diamond Tester,Professional Jewelry Selector-Gemstone Tool-Automatic Calibration,Jewelry Tester Tool Kit, with Pointer Board and Indicator Light

Specification:Product name: Professional and efficient gem detectorColour: BlackTechnical specificationsOperating temperature--18°C- 27°C (65°F- 80°F)Storage temperature---10°C- 50°C(50°F-122°F)Power supply: 3 AAA batteries or AC adapter (batteries not included in package)Battery life: 25 hours of continuous use with alkaline batteries (battery not included in package)Standby time: 5 minutes from the last measurement timeAnalog display size: 73.5mmX44.0 mmWeight: 295 gramsProducts include:1 x Gem Diamond Tester (battery not included in package)

• ✔Precise And Reliable Testing Tools: Professional diamond tester specially designed for quick and easy distinguishing between diamonds, moissanites and other artificial stones.
• ✔Fast and Safe: This diamond selection tester is designed for fast, precise and safe diamond testing. No harm to diamonds.
• ✔Retractable Probe Tip: the thermal conductivity principle distinguishes diamonds, with automatic calibration function, retractable probe tip, minimal measurable 0.01 ct.
• ✔Optimal Efficiency: Our diamond test pens are designed for your efficiency and have an intuitive pointer field so you can work quickly and efficiently.
• ✔Powered By: This device comes with a variety of power supplies, making it the perfect jewellery tester. It can be powered by a USB cable and AAA batteries (batteries not included).