Description: Portable: This electric stone tester is small in size and lightweight which can be put in your bag even when you going out. High accuracy: This portable jewelry testing tool is designed with a 60X magnifier which can help you identify it precisely. With alarm: This crystal detector with 60X magnifier has a metal alarm so that you can know that if the stone is fake. Wide usage: The testing device with alarm has a wide using application which can be used to test the stones, crystal and jewelry. Fit occasions: The accurate jewellery detecting equipment is suitable to be used for professional jewelry shop and jeweler. Specification: Stone tester: Material: ABS. Size: Approx. 160x42x22mm/6.29x1.65x0.86inch. Initial warm-up: 20 seconds. Indicators: Audio and LED light. Power: 1x9V battery(not included). 60X magnifying glass: Material: Metal. Color: Silver. Size: Approx. 40x35x20mm/1.57x1.37x0.78inch. Magnification: 60X. Lighting: LED lamp. Power: 3xLR1130 batteries(included). Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Stone Tester(with 1 Piece 60X Magnifying Glass, 1 Piece Testing Stand, 2 Pieces User Manuals).