While it's possible a crack let water in? Don't know...but first watch died @ year, thought I would try the venu 2 plus to take phone calls while my hands were full, it's speaker was so pathetic you would have to hold the watch to your ear and still struggle to hear it, which defeats the purpose...then it just went black screen after @year. Got another vivo 4s to save money this time, now it's acting crazy...stops tracking sleep, completely loses phone, I had to set it up from scratch with my phone 3-4 times yesterday...So...@ 3 years, 3 watches...this is becoming too expensive I might have to try another brand.