Seiko caseback logo meaning

Just wanna share with y'all something I read in another forum on Seiko caseback logo and it's meanings..

Good info 8-)

Oh thanks for sharing bro!! Something new I learn today :)

thanks for sharing.. there is no difference between 10-20Bar and 200m-1000m right? or I c0ck-eye?

looks like no difference. I guess we still need to depend on the caseback writings.