1. LCD AND LED DESIGN: Portable jewelry tester, with LCD display and LED indicator, to quickly identify the detected objects, has high sensitivity and high accuracy. 2. HIGH EFFICIENCY: Mainly used to quickly identify and other jewelry, the measurement results are accurate, and easy to read, efficient and convenient. 3. SOUND ALARM: If a real is detected, the green LED will light up, and if it is a moissanite or simulated , the red LED will light up and give an alarm. 4. COMPACT SIZE: With compact design, this jewelry detector pen is easy to carry and store, and comes with a stone holder for easy detecting operations. 5. WIDE APPLICATION: This jewelry testing pen kit is for jewelry stores, auction venues and laboratories, etc., which has a wide range of applications. Spec: Item Type: Moissanite Pen Material: ABS Power Supply: 1 x 9V 6F22 dry battery (not included) Package List: 1 x Moissanite Pen 1 x Storage Bag 1 x Holder 1 x User Manual Notice: 1. The tested items should be kept clean, dry and at room temperature, otherwise it will cause false detection. 2. The probe is very sensitive and should be protected with a cover when not in use. 3. Low power should be replaced in time. 4. If the battery is not used for a long time, please remove it.HIGH EFFICIENCY: Mainly used to quickly identify and other jewelry, the measurement results are accurate, and easy to read, efficient and convenient. COMPACT SIZE: With compact design, this jewelry detector pen is easy to carry and store, and comes with a stone holder for easy detecting operations. WIDE APPLICATION: This jewelry testing pen kit is for jewelry stores, auction venues and laboratories, etc., which has a wide range of applications. SOUND ALARM: If a real is detected, the green LED will light up, and if it is a moissanite or simulated , the red LED will light up and give an alarm. LCD AND LED DESIGN: Portable jewelry tester, with LCD display and LED indicator, to quickly identify the detected objects, has high sensitivity and high accuracy.