Marizzolla (code no: MB01)

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( Estimated delivery on July )

- 1 x Marizzolla Automatic W/R 500M Dive Watch

- Each watch with individual number

- 3 years warranty

Marizzolla is a brand born for diving watches. Its production aims at top quality, high production cost but selling at a good and a low price, taking this innovation as its design route. The Marizzolla watch could be the favorite collection watch for all backers, bring the new experience for all who love it.

Helium release valve

When saturation divers operate at great depths, they live under pressure in a saturation habitat with an atmosphere containing helium or hydrogen. Since helium atoms are the smallest natural gas particles, they are able to diffuse into the watch, past the seals which are able to prevent ingress of larger molecules such as water. This is not a problem as long as the watch remains under external pressure, but when decompressing, a pressure difference builds up between the trapped gas inside the watch case and the environment. Depending on the construction of the watch case and crystal, this effect can cause damage to the watch, such as the crystal popping off, as diving watches are designed primarily to withstand external pressure.

Some watch manufacturers manage this effect by simply making the case strong enough to withstand the internal pressure, but Rolex and Doxa S.A. approached the problem by creating the helium escape valve in the 1960s (first introduced in the Rolex Submariner/Sea-Dweller and the Doxa Conquistador): A small, spring-loaded one-way valve is fitted in the watch case that opens when the differential between internal and external pressure reaches is sufficient to overcome the spring force. As a result, the valve releases the gases trapped inside the watch case during decompression, preventing damage to the watch.

Automatic helium release valves usually don't need any manual operation, but some are backed up by a screw-down crown in the side of the watch, which is unscrewed at the start of decompression to allow the valve to operate.

Helium release valves can primarily be found on diving watches featuring a water resistance rating greater than 300 m (1000 ft). ISO 6425 defines a diver's watch for mixed-gas diving as: A watch required to be resistant during diving in water to a depth of at least 100 m and to be unaffected by the over pressure of the breathing gas.

Submarine-Propeller Auto Rotor Design

The automatic rotor on Dial has the concept of the submarine-propeller as the theme. When you see the propeller on turning, it carries the function of winding on the movement running.

Case Back

The Case Back bottom cover is made of a historically valuable diving helmet as the theme.

US Navy Mark V Vintage Divers Diving Helmet HELMET & MARKINGS: Authentic 12 bolt, 4 light Schrader Navy MK V dated July 1943 with serial number 427B on the maker's tag. The number on the bonnet is neck ring is 456, and the number on the rails is 427. There is the Navy Inspectors mark of a "U anchor S" on the top of the speaker housing's knuckle.

Super Swiss Luminous Nova

This kind of luminous light has amazing luminous efficacy, and its luminous persistence is very strong. The cost of that luminous is expensive to use, we choose it as we would like to upgrade our product to a high standard level.

Dive Bezel Ring

Our diving ring is different from the basic dive water design. The double-layer design is used to make the appearance more advanced and elegance. In the bezel ring production, the polishing requirements and costs are higher than normal, but we do not to increase the retail price, the aim is to make our watch in high quality but in a very competitive price.

Diving watch crown

Compared to the  other basic swimming watches, this diving watch has to withstand high water pressure to 500 meter and there are many complicated components on the diving crown, besides, the production requirements on the water pressure testing are very strict.

Limited Edition

Each watch with individual number