Diamond tester can effectively and quickly distinguish natural diamond from all models of diamond simulants and metals, except synthetic Moissanite which has similar thermal conductivity to Diamond.

Working voltage: DC 9V, 6F22 battery, or AC adaptor(110V- 240V, DC 9V,optional).
Probe warm up time: about 25 seconds.
Working time: about 5 hours for continuous use.
Working temperature: 18℃ to 30℃