Just bought this model last week as I wanted an air conditioned option for bikes. The compressor arrived well packaged and the instructions seemed understandable to me. I've used it with the DC option from the power outlet in my car with no problems. The cable was long enough to reach my rear wheel with plenty of headroom. I like the automatic switch-off and the clear display. It took longer than I expected but quicker than the local gas station. Overall, it makes a robust, well-packaged and easy-to-use impression. Addendum two weeks later: I've used it twice now and am really impressed with how easy it is to use - much easier than storing air pumps. refuel! I'm very happy with my purchase now that I've used it for a while.