I tinker a lot with computers and other electronic gadgets and go through a lot of canned air so thought I'd give this a try. It's not as powerful as canned air as claimed. However, I have used both the blower and vacuum functionality many times over the last 3 months and have been very happy with it.
Blower – Weaker than canned air, but at top speed, it does a pretty good job. Especially when using the proper attachment. I still have to resort to canned air for some jobs, but this product has already saved me at least 3 cans of expensive canned air. One of the nicest features is that it will continually blow forced air until the job is done, unlike canned air which anyone who uses it regularly knows can will basically freeze up after a minute or so and lose pressure. You also don't have to worry about it unexpectedly spraying out residue that can damage electronic components and can happen with canned air.
Vacuum – Vacuum mode works OK but only viable for small jobs like dust and smaller debris like sawdust. It's worked well for my electronics, especially with the soft brush attachment. I also used it to clean out the inside of my virtual pinball cabinet which had a lot of fine dust and some larger saw dust artifacts from where I had drilled a bunch of holes for buttons and fans. It worked great picking up the fine particulates as opposed to just blowing them out of the way. Note that it is IMPORTANT that you clean the filter and vacuum canister out thoroughly after every use or finer dust/particulates can stick together and limit vacuum effectiveness. I found that the air blower mode is really helpful to use when cleaning the vacuum filter and vacuum canister.
CONS:
– Not easy to tell when it needs recharging. No clear indicator of battery level. If you look really closely through where the seam comes together you can barely see an LED inside the handle that will be either green or red depending on charge level. Why the LED is easier to see on the outside of the unit is a pity.
– Doesn't exert as much force as canned area as claimed.