Ausgewählte SSI Online Tauchkurse bequem von überall auf der Welt abschließen!
The WWL-1 lens is made of solid glass and quite heavy.
And hence that, a bit of trimming is a good idea!
The collar is hardened, and can resist a fair amount of pressure.
You can take it to 100 meters if you like.
Fixed with 2 screws. Included.