Features:1. This product can select the moissanite from the real diamond.2. Non-destructive testing, do not hurt your item. It will automatically alarm if the battery is too low.3. Portable size, convenient for carrying.4. Easy to operate and accurate test.Specification:Material: PlasticColor: Shown As PicturesSize: Approx. 2.2 * 4 * 16cm / 0.87 * 1.57 * 6.3inchWeight: 156gBattery: 9V (Not Included)Type: Jewelry ToolsPackage List:1 * Moissan Tester1 * Tray1 * Manual (Chinese English Indian Japanese)Note:1. The items you test shoudler be clean, dry, and at room temperature. Or it will cause false detection.2. The probe is very sensitive and should be protected with a cover when not in use.3. Low power should be replaced in time.4. Remove the battery if it is not used for a long time.