LCD display & LED indicator.
Emit audible sounds to give accurate reading.
Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone ).
Large / small switch for testing diamonds +/ - 8 points.
Powered by DC 9V battery x 1 (Not included ).

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 4.88 inch
Height : 0.12 inch
Length : 8.03 inch

Item Weight: 4.8 ounce (View shipping rates and policies)
Shipping Weight: 8 ounce (View shipping rates and policies)

ASIN : B00DMSUCSC