IWC Portofino Chronograph Black Dial 42mm IW391010 Automatic

Band Material: 316L. The chassis is made of 316L, which has the best corrosion in daily seawater, and 316L steel is completely sufficient.

Watch Case: 316L. The case uses 316L steel, which is a very strong and corrosion-resistant steel. It has the same strength as the most popular grades (HRC52, HRC55), but only half the weight. Compared with competitors, the production cost of stainless steel is also higher.

Case Back: Solid. The case uses a thick solid back, which allows you to use it for a longer time and keep the watch for a long time.

Crystal: Sapphire Crystal. The sapphire crystal glass can block moisture and dust, protect the hands, dial and movement. Tip: The first-range cheap movement version is made of mineral glass.

Hand: Silver Tone. As for the watch’s hands, it is silver-tone that is simple but luxury.

Second Markers: Minute markers around the outer rim. The small mark on the outer edge of the glass edge is one of the most recognized design elements in all industries. It is called the hand of a clock. This design element is used in many famous designs such as clocks, and other objects.

Dial Markers: Index. According to a study, the human eye is sensitive to sticks, unlike a normal dial, you can see the time by looking at the index.

Bezel Material: Stainless Steel. The stainless steel bezel material is one of the best materials for watches. It is a unique structure that makes it an excellent choice for watches. The material can resist scratches, abrasions and indentation. This bezel material is the most resistant to heat and cold of all materials used in watchmaking.

Clasp: Fold Over Clasp. A fold over clasp used here is a great way to protect and store your watch. It has a unique design that creates a secure lock, which can be easily opened and closed.

Water Resistance: 30 meters. The watch we use a waterproof at 30 meters, which is similar as real watch. Tips: The standard configuration is just life waterproof, need to purchase additional waterproof service which is up to 30 meters.