Jewelry Diamond Tester, Diamond Tester Diamond Combination Tester Diamond Tester for Novices and Jewelry Experts with PU Box (Battery Not Included)

automatic calibration Clear and easy-to-read analog panel display Portable tester can be used anywhere Use metal detection to identify common gemstone types Specification: Product name: Professional and efficient gem detector Colour: Black Technical specifications Operating 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: 2.5 hours of continuous use using alkaline batteries (batteries not included in package) Standby time: 5 minutes from the last measurement time Analog display size: 73.5mm x 44.0mm Weight: 295 g Products include: 1 x Gemstone Diamond Tester (Battery not included in the package)

• 【Optimal Efficiency】Our diamond test pen is designed for your efficiency and features an intuitive pointer field so you can work quickly and efficiently.
• 【Power Supply】This multifunctional device comes with various power sources, making it the perfect jewelry tester. It can be powered by a USB cable and AAA batteries (batteries not included).
• 【Accurate and Reliable Testing Tool】Professional diamond tester, designed for quickly and easily distinguishing diamonds, moissanite and other man-made gemstones.
• 【Retractable Probe Tip】Thermal conductivity principle distinguishes diamonds, with automatic calibration function, retractable probe tip, can measure as small as 0.01 carat.
• 【Service】: We are very sorry for the shopping experience you have experienced. If you have any problems with the goods you received, please contact us and we will serve you 24 hours a day.