Can be embedded in the inlay hole of jewelry.
When hit, you have a 15% chance to get the lightning crown effect, causing 600.0%(+ 10.0%/ level) lightning damage to nearby enemies every second for 3 seconds.
When affected by the lightning crown effect, the moving speed is increased by 25% (level 25 is required).
This is the symbol of CMA. C is the outer frame. This is the symbol of national metrology certification. With this sign, it shows that the applicant has passed the metrol