... Without any reside 4.Non-flamma Keyboard air duster,computer air duster1.Power dust remover blows away2.High ... applicationses:For camera, watch,cleaning of alarm, signal systems, computer heads, conneciors, contracts, primarily low voltage, stereo units, ... , PC cards, radios,receivers and fransmitters, relays, resisters,speakers,tape recorders, tape head,tuners,timers,transisters,etc.Advantages:High ...