For this kind of products, you can apply for invention patent and utility model patent at the same time.
The two kinds of patents have different examination processes, different examination periods, different fees and different protection periods.
You can choose which type to apply for according to your needs.
The process of all patent applications is similar. Because the process of patent application is a legal process, and the period is relatively long, the examination period of utility model is short, about 6 months; The review period of inventions is 2-3 years, and there will be some legal affairs to deal with in the middle. So the best way is to entrust a qualified patent agency to do this. You only need to explain to your agent the technical scheme, protection points and purposes of patent application, and the remaining agents and agencies will help you complete it.