Color Classification:
Upgrade battery version (free 4 tips)
Upgrade charging version (free 6 tips)
Power supply: plug
Charging gear: 3 gears

Steps for usage
1. Hold the instrument, rotate it clockwise, and gently pull the tip.
2. Unplug the filter, and you will see the sponge filter.
3. Prepare a new sponge filter and seal.

4. Remove the old sponge filter and replace it with a new sponge filter.