Specifications:

1. Smoke from a flamed cigarette can be absorbed and filtered out by activated carbon filter box.
2. Filtering fan activated to absorb and exhaust cigarette smoke.
3. While clearing the ashtray, please take out the slot directly.
4. Power from 2 UM-3 size batteries or by USB slot of your computer.
5. If using batteries- when the smoke cannot be absorbed totally, please open the battery cover to replace batteries.