Portable Diamond Tester Selector (2 x AAA)
Color: Blue + black - Compact and small size for easy carrying - Easy to use - Red yellow and green LED indicator - Discriminates the diamond by measure the different of heat conductivity of individual stones - Operating temperature: 5'C~35'C - Accuracy: 99.99% - Powered by 2 x AAA batteries (not included) - Package includes: - 1 x Tester - 1 x Protective pouch - 1 x Tray - 1 x English/Japanese user manual