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The PRT-B50 series are equipped with quad sensor
— three sensors that detect compass bearing, barometric pressure/altitude, and temperature,
plus an accelerometer for counting steps.
They also come with Smartphone Link functions, linking to the PRO TREK Connected app
on a smartphone using Bluetooth® to offer a host of functions that support outdoor activities.



(Mobile link)

PRO TREK Connected

PRO TREK Connected

Display records of your activity, such as routes you have traveled and calories burned.
You can also use your smartphone to change various watch settings.

Automatic Time Adjustment

The watch is reset regularly 4 times a day by the smartphone to show both home time and world time correctly. You can also reset the watch manually with just a push of a button when crossing between time zones. The precise time in the current location is displayed instantly with DST (daylight saving time) taken into account.

World Time for over 300 cities

The smartphone app can be used to conduct world time city selection. After a city is selected by touch from a world map or a city list containing over 300 cities, the time in the selected city is displayed on an inset dial with DST (daylight saving time) taken into account.

Accurate Time System

Accurate time information (UTC) is acquired by a smartphone from a time server on the Internet. The smartphone then analyzes this time data and its own current positioning data regarding the time zone and DST (daylight saving time) status of the current location and resets the watch to the correct time automatically. Since Wi-Fi communication is also possible, the smartphone can also acquire time information in indoor environments such as airports or subways.


Select a location