Features: Equipped with ultraviolet light to test the fluorescent reaction of stones Flexible calibration with multi-Level Volume to match different sizes of stones An option to use or connect with an A/C adaptor (not included) Most compact design and low battery consumption Emit audible sounds to give a warning buzzer if the probe touches the metal surface The audible and visual indicator of genuine diamond Identifies genuine "natural" diamonds Distinguish stones as small as 2pt Specifications: Probe Warm-up Time: about 25sec Working Time: about 5 hours for continuous use Suggested Working Temperature: 18°C to 30°C Working Voltage: 1 x 9V, 6F22 battery or AC adaptor 110V-240V, DC 9V (battery is included and adaptor is not included in the set) Size: 168 x 31 x 21mm Net weight: 55g Set Includes: 1 x Diamond Tester 1 x Vinyl Leather Pouch Case 1 x Heavy-duty Testing Platform 1 x 9V Battery English Instruction Manual
