This is a Dyson sv21. I've cleaned it as thoroughly as possible. There are no functional issues; it works normally. I don't think there's any noticeable odor, but please be aware that this can vary from person to person. The battery is a genuine Dyson battery, so you can use it with confidence. You can use it immediately upon arrival! Everything, from the filter to other parts, is genuine Dyson. It has been disassembled and cleaned, but it is still a used item. Please refrain from purchasing if you are looking for perfection or are overly concerned about minor details. Please purchase only after you are fully satisfied.