Nitecore BB21 Electronic Photo Blower Electronic Electronic Cleaner Blower Camera COMS Cleaning Wind Speed 80km/h 2.7Kpa Dust Removal Quick Release Brush with Dust Cap 33.6W high power motor, high efficiency driving impeller dust,hydrodynamic air duct,reduce wind resistance to enhance wind,42mm integrated impeller,built-in 20pcs high density spiral fan blade,effectively dusting at the same time,flexible wind won't hurt lens coating or CMOS Dust removal power of 2.7 kpa. The dust removal power is 80% higher than normal manual blows,