You know how the dentist reminds you to floss your teeth but then you never do? This is a reminder about operating buttons when freshwater rinsing, rather than just dunking or spraying your housing.
I have several Olympus TG5 and TG6 housings. I also have older Fantasea housings and a newer AOI housing. I recon the quality of these housings is good and they have lasted well with heavy commercial use. A potential source of leaks I've experienced on the housings is the shutter button. If saltwater is left sitting in the shutter button mechanism this can cause slight corrosion after a time on the stainless steel part where it seats in the o ring so the seal is lost and water drips in at this pint. It can be possible to fix but - like teeth - best to look after.
