Luxury metal frame made by the machining and craftsman’s hand-finish.

The metal frame is made by the luxury technique of machining process to carve out from single stainless steel plate, and it is painstakingly hand-finished by skilled metal polishing craftsmen. This enables to produce true and deep luster of the material itself. Furthermore, special vapor deposition is processed to the dark chrome and premium gold frame, which is the most superior appearance finish with extreme hardness and durability.

Outstanding underwater balance due to the stainless metal frame.

Lightweight mask is comfortable in the fitting on land, however in the water, the internal volume of the mask makes positive buoyancy. which particularly worrisome is instability due to the buoyancy in the day-to-day or long-time use of professional divers.
In bio-metal mask pro, the reasonable weight due to the adoption of a stainless steel frame effectively canceling the buoyancy of the inner volume. As a results the fit in the water becomes weightlessness sensation totally different from the fit on land .
It is the mask that has been well thought out for the professional divers.

Metal frame

Small sized frame can only be realized by only metal frame both the breadth of vision and the field of three dimensional vision for both eyes are the number one in the world.

Design of mask flange

Available in four types of flange to fit the shape of the face.
By realizing the world's smallest inner volume, you can easily do clear the mask.

bio-AR lens

bio-AR lens is Nippon Sensuiki's revolutionary optical coated lens that outperforms any other coating in the diving mask market. Our most popular bio-metal mask pro come standard with this high-quality optical coated lens, making for an incredible value.