Diamond Gems Tester Pen Portable Gemstone Selector Tool Led Indicator Black
- Easy operation.
- LED light and audio result indication.
- The red light will be showed and the audio indicator will ring if the stone is real diamond.
- Simple calibration for stones of various sizes.
- Accurate and reliable reading.
- Matched with a testing platform for loose stones.
- Light weight, matched with a convenient carrying case.
- Detailed user manual is included in the package.
- Maintenance and repair:
- 1, the instrument is very sensitive to the probe, must be particularly careful to protect, do not use should be set on the sheath.
- 2, the preparation of the indicator light is very dark, shows the battery will run out, should be timely replacement battery.
- 3, the instrument is not used for a long time, please take out the battery.
- 4, in order to detect accurately, the proposed correction once a year.
