Mostly of rubber, resins or silicone. This type of material has high flexibility, is hypoallergenic, water resistant, and does not absorb sweat.

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).

Tough Solar is a power technology of Casio watches. The solar cells, which are under the crystal, convert light energy into electrical energy, which is stored in the battery and powers the watch. This eliminates the need for battery replacement!

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).

A choice of two ways to display time in 12 or 24 hour format. For example, 3:45 or 15:45.

5 independent alarms for flexible reminders of important events. You can set 5 different reminders.

Countdown timer with a maximum time of 1 hour. Example: set a countdown for 30 minutes. After 30 minutes alarm starts.

This feature is mostly found in solar-powered watches. It shows the battery charge status. If the indicator indicates a low level, just expose the watch to light and battery will recharge.

An illumination layer on hands which, after a short recharge, ensures illumination in the dark.

EL panel illuminates main dial and thus ensures easier readability. The auto function provides automatic switching of illumination by leaning your hand to the face. The illumination is activated by a sensor, which is activated by turning your hand by 45°  this illuminates the main dial. Moreover, the watch is equipped with a light sensor that activates the diode only during twilight or darkness. This feature can be easily turned on or off. When auto function is deactivated, activate illumination by touch of a button.

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.

Is widespread alarm function. It provides repeated alarm - after stopping the alarm, the alarm will sound again in af few minutes.

Elapsed time, split time and final time are measured  to the nearest hundredth of a second. The maximum measured time is 24 hours.

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

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.

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.

The glass is made from plastic (acrylate). The main advantage is its high flexibility and therefore more resistant to damage. Its disadvantage is a greater susceptibility to scratches.

A Folding clasp is the most widespread method of fastening watch straps and wristbands. It's a simple and reliable fastening method. If it accidentally unfastens, it won't unfasten completely, and the watch will remain on your wrist.