Our JSVG is a high quality, precision carat scale with 0.01ct accuracy. The JSVG weighs in ct, g, dwt, gn and oz. It includes a gem bowl, detachable draft shield and carrying case. It has a bright backlit red colored LCD display. It features pushbutton digital calibration, tare, memory, overload protection, low battery indication, zero tracking and battery saving auto-off functions. The JSVG is powered by 3 AAA alkaline batteries. A 5 year limited replacement warranty is included. 100ct x 0.01ct, g, dwt, gn & oz. Bright red colored backlit display.