DETAILED DESCRIPTION
Case material: ceramic
The main advantage of ceramics is the high hardness and color stability. It's harder than stainless steel, and therefore has a very high resistance to scratching. It is hypoallergic and therefore suitable for all with increased skin sensitivity. Its main drawback is its fragility - can break during strong impact.
Case material: titanium
Titanium does not contain additives such as nickel and lead and therefore is mostly suitable for allergy sufferers. Causes no adverse reaction with the skin. It is hard, color stable and very lightweight.
Movement: battery
The watch is powered by a battery.
Strap material: plastic
Mostly of rubber, resins or silicone. This type of material has high flexibility, is hypoallergenic, water resistant, and does not absorb sweat.
Date - the day of the month
Displays the current day of the month period from 1 to 31 December.
Helium valve
A one-way valve which opens automatically or manually when the internal pressure increases due to the accumulation of helium, the helium is suddenly released and the pressure in the housing is equalised with the ambient atmospheric pressure.
Stopwatch 1/1 seconds - 12 hours
Measurement accuracy of 1 second. The maximum measured time is 12 hours.
Super-LumiNova
Super-LumiNova is a luminous layer that is applied to the hands, indices and digits on the dial. After sufficient activation by sunlight or artificial light, your watch face will even be readable in the dark. It's different from other luminescent materials (tritium, GTLS) in a way that it's not radioactive but still very clear.
Water resistance: 1000M/100ATM
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).
Crystal: sapphire
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.