Natural environmentally friendly rubber inlet valve design prevents airflow into the ductDetachable super ductSpecially used for cleaning camera lens, body, camcorder, computer, notebook computer, watch, hand-cranked electric grinder, etc.Application: Suitable for the following equipment:A. Photos, videos and precision optical equipmentB. Traditional musical instruments and electronic musical instrumentsC. Computers and communication equipmentD. Watches and jewelryE. Coffee machine and grinder, etc.Colour:Photo ColorMaterial:Plastic+Glue+ClothPackage Contents:1 x pump1 x cleaning brush1 x ragOnly 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.