Features: Good Material - It is made of solid durable ABS housing, high sensitivity alloy probe, rubber protective cap, well heat-conducting plate. Fast & Precise Measurement - A quick, accurate, safe way to distinguish diamond from the simulants, brings no harm to the diamond. Easy Use - Turn on, wait for heating up ready, hold(finger on heat-conducting plate), use the probe to make 90-degree contact with the measured object. Intuitive Design - Sound beep and LED lights straightforwardly indicates test result(beep & light: diamond, continuous buzzing sound: metal, no signs: simulants). Portable Size & Leather Bag - compact, lightweight diamond tester, powered by 1 x 9V 006p battery, comes with a leather case, for easy store, carry. Specifications: Material: Plastic + Electronic Components Color: Black Product Dimension: 160*40*23mm / 6.29*1.57*0.90in Product Weight: 60g / 2.11oz Package Size: 185*60*30mm / 7.28*2.36*1.18in Package Weight: 118g / 4.16oz Note: Diamond tester set only, other accessories in the pictures are not included. Please read the user manual carefully for more information before usage. Due to lighting or other reasons, the picture and material object may slightly differ. Due to manual measurement, there may be deviation, please in kind prevail. Packing List: 1 * Diamond Tester 1 * Bag 1 * User Manual