[ratio watches] opinions on ratio watches

I recently discovered this brand which apparently has great dive watches with good movements and materials for less than 100 euros. I wanted to know if they are just another rubbish quality Chinese brand steel dive style that have no quality control or they are actually trustworthy. I am into spearfishing and free diving so I need a watch that will actually be properly sealed. I've also had some experiences with Chinese watches with automatic movements that were very unprecise. Has someone had one of these and can tell me about their experience. thank you