Diamond Tester Pen High Accuracy Diamond Tester with Case Jewerly Diamond Selector for Professional Novice Expert

Features:
Dual function: this tester is designed for accurate diamond testing, and jade hardness (in the range of 5-9) testing.
Easy to use: ensure the probe is 90 degrees vertical to the diamond, the tester will emit sounds and lights (9) if the diamond is real.
6F 22 9V battery powered, we provide you with 2 types (without or with battery) for option.
Lightweight and portable to carry, comes with a protective leather case for convenient storage and carry.
Since it's professional equipment, please read the user manual slowly and carefully before and in using.
Note:
1. The probe is very sensitive, please cover it with protective cover when not in use.
2. Please replace battery in time if the READY indicator light is very dark.
3. Please remove the battery if the tester is not in use for a long time.
4. In order to test accurately, it is recommended to calibrate once a year.