Wear OS by Google To connect the CASIO watch to the smartphone, just install the Wear OS by Google operating system. This offers a number of pre-installed apps for outdoor activities. You can also download other compatible apps from the Google Play store. Wi-Fi (IEEE 802.11 b / g / n) The watch will automatically connect to a stored Wi-Fi network simply by activating Wi-Fi (for this function the watch must not be connected to the smartphone via Bluetooth). Bluetooth Smart The special Bluetooth technology for energy saving guarantees low-energy data exchange with a simple click on the appropriate button. Via Bluetooth it is possible to connect the watch to the smartphone, thus accessing a series of desired useful functions. Smartphone time Touch screen The convenient touchscreen allows you to quickly and easily set the numerous functions of the clock. Dual LCD - (320 x 300) The watch has a dual LCD display with stackable and independent elements. The black and white screen guarantees an optimal level of readability even in low light conditions, while the color screen is able to perfectly render the graphic and colored values, while ensuring a clear display of the contents. Measurement of optical heart rate An optical sensor on the back of the watch case uses LEDs to measure heart rate on the wrist. The determined values ​​are displayed on the clock. Barometer (260 / 1,100 hPa) A special sensor measures the atmospheric pressure (measuring range: 260 / 1,100 hPa) and displays it as a symbol on the display. It is thus possible to know in advance the trend of the weather. Digital compass The built-in direction sensor detects magnetic North. Detection of altitude up to 10,000 m A pressure sensor detects changes in atmospheric pressure and converts the data into altitude up to 10,000 m. Moon phase indicator The moon phase indicator shows the current state of the moon in relation to the earth. Tide indicator Once the location is set, the watch will display the low a