3 plug in diffusers and 1 stand alone,

3 are Glade from S.C, Johnson and the 4 th is from Airwiick.

The first one is just the plug in diffuser, it has some stains as you can see from use. It has an adjustable tab for the degree of scent you want. It is approximately 4 x 2 x 1 1/2". It uses a bottle fragrance.

The second one is a Glade also, it has a 12 amp plug at the top and takes the small flat insert type fragances. It is about 3 x 3 x 1 inches.

The third one is the Airwick and is battery operated, has a fan inside. It is adjustable, and takes a small bottle insert. The batteries most likely will need changed. It is about 4 x 3 1/2 x 2 inches and stands alone.

The fourth one is a Glade, also adjustable and has an outlet on each side. It is approximately 5 x 3 x 2 inches and plugs in.

To the best of my knowledge, they are all in working order. I quit using them about a year ago and they were all working when I put them away, I have not retested them and am not going to . They are sold as is.They are all in excellent conditon,have collected some dust and smoke, nothing that isn't cleanable. They all may have stains from the fragrances.