PERSONAL AIR FILTRATION SYSTEM • NO BATTERIES NEEDED • BLOWS OUT COMPLETELY ODOR FREE AIR • LARGER THAN SMOKEBUDDY JR. BUT STILL PERFECTLY PORTABLE • INCLUDES 1 MR. SMOKEBUDDY KEYCHAIN • GREAT FOR HOME, OFFICE, DORM OR CAR • SIZE: 4" inch (H) x 2.5" inch (W) • Regular size. Smoke through your Smokebuddy and odorless air comes out the other end!