Features: Good material - It consists of solid, durable ABS body, high-sensitivity alloy probe, protective rubber cap and good heat-conducting plate. Fast and precise measurement - A fast, accurate and safe method for Distinguishing diamond from the simulants does not harm the diamond. Easy to use - power on, wait for heating, hold (fingers on the thermal plate) and place the probe in 90 degree contact with the target. Intuitive Design - A beep and LED indicators directly show the test result (Beep and light: diamond, continuous buzz: metal, no sign: simulants). Portable size & leather case - Compact, lightweight diamond tester, powered by 1 x 9V 006p Battery supplied with a leather case for easy storage and carrying. Specifications: Material: plastic + electronic components Color black Producta Dimension: 160 * 40 * 23mm / 6.29 * 1.57 * 0.90in Product weight: 60g Package size: 185 * 60 * 30mm / 7.28 * 2.36 * 1.18in Package weight : 118g Note: Diamond Tester Set only, other accessories in the pictures are not included. Please read the user manual carefully for more information before using. Due to lighting or other reasons, the picture and material object may be slightly different. Due to manual measurement, there may be some deviation, please in kind. Packing list: 1*diamond tester 1*bag 1 * User Manual