Srutueo The function of this Blower is to gently remove dust & erase smudges from delicate equipment without leaving residue. Excellent way to remove sensitive camera parts without physical contact. Better for the environment than canned air. Package Contents: 1 x Dust Blower Cleaner Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.