Features: "Diamond Selector II" is a portable electronic device for distinguishing real diamonds from other simulated stones. It is designed for quick, precise, and safe diamond testing. Diamond tester Powered by 1 x DC 9V battery ( battery not Included) LED light and audio result indication Accurate and reliable reading Metal alert Simple calibration for stones of various sizes Convenient carrying case Testing platform for loose stones One mini jeweler's loupe with 60X magnification power is included. This portable and versatile loupe can be used for jewelry, gemstone, document, and currency authentication. Built-in LED and fluorescence lights for normal illumination and currency detection Loupe Powered by 3 Pcs LR1130 batteries( battery included) Easy focus adjustment Convenient carrying pouch Specifications Dimensions:13.3" x 3.9 x 2.1" (Depth) Weight: 85g Testing Capability: Diamonds Diamond simulation (e.g. CZ) Metal Color: Black Auto Off: N/A Initial warm-up:~ 20 sec. Indicator: Audio and LED lamps Package Content 1 x Portable Diamond Tester and 60X Illuminated Loupe