The ILIFE A4s Pro is a budget-friendly robot vacuum. It offers an excellent battery performance and comes with an electrowall, which is a small physical block that acts as a boundary marker. However, it really struggles on all surface types as it delivers a mediocre performance on bare floors and does an even worse job on carpet. Pet hair is especially tricky for it as hair can get caught in the brushroll or intake opening. It also requires a lot of regular maintenance and a few parts need to be replaced over time. Still, if you're on a tight budget and need a robot vacuum to clean bare floors, it's an alright option.