This duster seems to me to be industrial strength. It is definitely a sturdy-built product. The noise is loud due to the high voltage. But this is what makes it a great duster. Would be best to dust computers and equipment outside since it cleans out the dust particles very well and you would prefer having that outside, not inside. Sound is similar to a vacuum. This is normal. The box says it comes with a 5-year motor warranty. It has a single stage fan and comes with an air-pin pointer, air concentrator nozzle, air-flare nozzle and detailing tool kit. The attachments help to get into tiny cracks like computer keyboard and cameras.