Stainless steel 316L (Stainless Steel) is a very durable material that theoretically can not be destroyed. It is hard (non-bendable and non-crackable), color stable, antiallergic (does not react with body fluids and therefore no metal components are not released into the skin and flesh) and has anticorrosive surface (the surface is resistant to oxidation and corrosion. Moreover, it is also resistant to fresh and salt water).

The watch is powered by a battery.

Leather is one of the most popular materials used in the manufacturing of Precision straps. It looks elegant, feels warm, and easily adapts to the wrist.

COSC (or C.O.S.C) is marking of watches, which meet the highest standards of accuracy. This certificate is issued mainly to watches with mechanical movements with automatic or manual winding.  awarded by respected Swiss Certification COSC (Contrôle Officiel Suisse des Chronomètres - the Official Swiss Chronometer Testing Institute). The worst running accuracy error is -4 to +6 seconds. The watch is tested in five positions and at different temperatures. The certificate is awarded for each test piece of movement separately. Each piece of the watch that receives the certificate has its own certification number on a movement.

Displays the current day of the month period from 1 to 31 December.

The unique watch protection system Certina, which enhances their resistance. The protection is based on five points: 1) Sapphire crystal - exceptional scratch resistance
2) O-ring on the shaft - increased protection against water
3) Two o-rings on the crown - increased protection against water
4) Specific gasket on the rear of the cage - increased protection against water
5) Reinforced back cover - shock resistance

Measurement accuracy of 1 second. The maximum measured time is 30 minutes.

Watches marked with water tightness 100M/10ATM are designed for swimming and snorkeling and free diving without breathing apparatus. 100M/10ATM indicates the degree of water resistance standardized by ISO 6425. ISO tests include temperature changes, depth, pressure (water and air) for different times under the  rest and during manipulation with the operative part of the watch.

Sapphire glass in the watch was made in a laboratory by melting aluminium oxide (Al2O3) in the presence of hydrogen and oxygen at 2000 °C. After crystallisation into the corundum 'pear', it's cut and further processed into the desired shape and size. Sapphire glass is the hardest glass used in watches. It would be second behind diamond on the scale of mineral hardness, so it can only scratched by diamond. Its only disadvantage is its fragility.

This is closing in which the buckle closes reliably on two sides. It resembles the shape of a butterfly after opening. During accidental opening, the watch stays on the hand.