Automatically deactivates the Auto EL backlight function when surrounding light is sufficient, and activates it under dim light or dark conditions.

Even temperatures as low as -10 °C have no effect on this watch.

A solar cell provides power for operation.

In Europe or North America, in many parts of Canada and Central America or Japan - once the watch has been set to the local time zone, it receives the relevant signal ensuring that it always shows the exact time. In many countries the summer and winter time is also shown automatically.

A built-in direction sensor detecs the magnetic north.

A pressure sensor detects changes in the air pressure and converts the result into an altitude up to 10,000 m.

The moon phase indicator shows the current moon phase based to the earth

Once the high tide time has been entered for a selected location, the watch can display the low and high tide phases at this location. This can be quite useful, for example, if you want to know the patterns of the tides at your destination in advance.

A special sensor measures the air pressure (measuring range: 260 / 1100 hPa) and presents this on the display in the form of a symbol. This enables early detection of weather trends.

A sensor measures the ambient temperature around the watch and displays it in °C (-10°C /+60°C).

Depending on the model, up to 40 sets of elevation data can be stored in the watch's data memory and re-accessed at any time. Each of these data sets consists of a measured altitude as well as the date and time. In addition to the individual altitudes, the maximum and minimum altitudes during a measurement are also stored.

Displays the current time in major cities and specific areas around the world.

Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours.

radio-controlled

CTL1616