智利采购需求：w80 自动轮胎充气机，壁挂式自动轮胎充气机

I'm interested in the outdoor automatic tire inflator you offer and have a couple of questions. First, does this model have the capability to inflate two tires at the same time? It would be great to understand its efficiency in handling simultaneous inflation. Additionally, could you provide more details about what is included in the pricing? Specifically, I want to know if the price covers all necessary accessories such as couplings, hoses, and any assembly requirements, or if those items are sold separately. Your detailed response will really help me make an informed decision. Thanks!