This product can be used to detect whether your gemstone is diamond or moissanite. Made of fine quality material, wear- for long service time. Portable size, convenient for carrying. Easy to operate and quick and accurate results. Two powersupply methods, battery (6F22 9V battery) or power adapter. The battery is easy to replace, so you don't need to worry its battery. (Battery Not Included) Plug: EU Battery: 9V (not included) Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC 220V Colour:Black Material:ABS Package Contents: 1 * Diamond Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.