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 battery is charged with light energy. This eliminates the necessity to replace the battery.

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).

Subdial shows the time in 24-hour format. For example, the main dial shows 3 hours, which equals 15 on a subdial.

The watch automatically checks starting position of hands every hour, and adjust correct position if necessary. This eliminates deviation of the hands because of mechanical impact or influence of the magnetic field.

LumiBrite is a dramatically improved fluorescent luminous paint that quickly absorbs a greater amount of the light energy exposed to it and glows brighter and much longer in the dark. As its name suggests, LumiBrite starts glowing brightly in the dark and fades slowly. It is also completely free of radioactivity, ensuring safety for people and the environment. It is the ideal successor to both radioactive luminous paint and conventional fluorescent paints.

The watch bezel rotates. Use to calculate the aeronautical data such as fuel consumption, flight time, average speed...

The display shows the current date. It is pre-programmed, so there is no need to set short and long month and leap years. Most watches have this pre-programmed date until 2099th.

The watch Receives signals from atomic clocks, usually once every 24 hours. Deviation of atomic clocks is only one second in three million years. Therefore,watches equipped with this technology to receive radio signals are extremely accurate. Their owners can be assured that their time and date is always exact. This watch is receiving a signal from the transmitter, which are located in Europe (United Kingdom - Anthorn, Germany - Mainflingen), USA (Fort Collins, Colorado), Japan (Fukushima and Kyushu) and China (Shangqiu). In the event that you find yourself in an area that is not covered by the signal, your watch still maintains very high accuracy, and after returning to the coverage your time is again automatically adopted.

Measurement accuracy of 1 second. The maximum measured time is 60 minutes.

Display simply shows the times in selected major cities and areas of the world.

Watches marked with water tightness 1000M/100ATM are designed for swimming, snorkeling, and for professional diving with breathing apparatus. 1000M/100ATM indicates the degree of water resistance standardized by ISO 6425 ISO tests include temperature changes, depth, pressure (water and air) for different times under rest and during manipulation with  the operative part of the watch. The dive models, subsequently performs the test of resistance to salt water and  the ability to cope with the watch positive pressure (decompression simulation).

Specially hardened mineral glass used exclusively in Seiko watches. Thanks to additional chemical curing, it's able to offer higher scratch resistance than conventional mineral glass and at the same time it doesn't suffer from excessive brittleness.

Flip-lock Diver Clasp is the most widely used method of fastening straps and bracelets of watches. The buckle is also supplemented by a safety stop. If the lock is unloocked there is no accidental dropping of the watch. This is a very reliable method of fastening.