I bought a 12V VacLife inflator last year and I love it. It's not very powerful, but it's small, easy to use, and gets the job done. What I like most about the VacLife inflator is how easy it is to put the air cartridge on and off the valve stem. No need to over inflate the tire to make up for the loss of air when trying to take it off like my old AC compressor. However, I found that I still needed an AC powered inflator for home use, so I decided to give this dual power pack a try. To my surprise, it appears to be smaller than a 12V device. AC and DC outputs are clearly marked with different plug shapes, making confusion impossible. I used it without reading the manual first and found it intuitive. With a 12v supply it takes 130 seconds to inflate my 215/55 tire from 27psi to 36psi. With a 110 VAC power supply, this takes 90 seconds. I also tried inflating the tire from 0psi to 36psi with AC and it took just over 6 minutes. Overall, I'm happy with its functionality and versatility. I hope it has a pocket for the included accessories.