- Innovative & streamlined barrel and semi-dry top.
- Splash-guard against water entering at the surface.
- Crystal silicone (straight style ) flex-section & AC-21-F mouth-piece, and easy adjusting AC-77 swivel snorkel keeper.
- Soft and comfortable AC-21-F mouthpiece is Problue top selling mouthpiece.
- Easy purge system with the addition of purge cover to protect the silicone diaphragm.
- Barrel, dry top and lower housing's color to remain the black, and the inner top piece and lower housing clips can be changed 6 different colors for diver more choice.
- Same features as SN-1030.
- Black silicone flex-section and AC-21G mouthpiece instead of crystal silicone.