Quad Sensor and smartphone linking make fishing more fun!

Introducing the 200-meter water-resistant Bluetooth® PRO TREK PRTB70 equipped with functions specially designed for fishing.

A FISH IN TIME feature uses fish icons to indicate catch probability throughout the day. A new FISHING TIMER alarm automatically counts down with the second hand to the time remaining until when a good catch period is about to be entered. You can use the watch’s phone app to access information for about 3,300 major coastal points around the globe to check tide graph, sunrise and sunset time, and Moon age information. These watches come with compass, altitude/barometer, and temperature measurement capabilities, along with an accelerometer that keeps track of your step count.

The watch also uses information from your smartphone for its Location Indicator, which shows the bearing and distance to a destination saved to the app. This helps you easily maintain your heading even while on the go.

You can even configure watch settings with your phone to enable automatic adjustment to the current time anywhere in the world, to customize which information appears on each screen, and more.


The digital display shows the best fishing times (FISH IN TIME) for a specified location and date, along with fishing probability. The watch sounds an alarm when a fishing time is reached, and the second hand counts down the time from FISH IN TIME start to the end.


Tide Graph, Moon Data, Sunrise and Sunset Times

Tide information, Moon age, and sunrise and sunset times can be displayed for a specified location and date. This lets you get an idea of your expected catch during a specific time frame and helps you to better plan your fishing activities.

Quad Sensor

Quad Sensor capabilities let you measure direction, barometric pressure and altitude, temperature, and your step count. Barometric pressure measurement and other data help you get a grasp of fishing conditions at your current location and plan your daily activities.

200 Meter Water Resistance

A fine resin case ensures the high level of toughness and airtightness required for fishing and other water activities.

Hand Shift

Hand shift momentarily moves the hour and minute hands out of the way for easier reading of digital display information.

Super Illuminator (High-brightness LED Light)

A high-brightness LED light enables easy reading of the face and digital displays in the dark.


PRO TREK Connected

After installing the PRO TREK Connected app on your phone, you can link with the watch and automatically adjust its time setting.
Phone linking simplifies a number of operations, including FISH MEMO record management, quick access to the current time in 300 cities around the globe, and time setting configuration.


Fishing Point Setting

You can specify any one of approximately 3,300 points at ports around the world. Simply select a port on a map to access fishing times, Tide Graph information, Moon data, and sunrise and sunset times for that location.


Watch button operations can be used to record your current fishing location, time and date, and conditions with the phone app. For each point displayed on the map, you can check the barometric pressure tendency, tied information, and FISH IN TIME information. You can even add FISH MEMO records and images. Date and time information and other data can be exported (GPX format) and shared with your friends.
• Tide information and FISH IN TIME information is the data for the fish point selected with the app.

Calories Burned

Altitude measurement and the step count are used to calculate and display the calories you burn, and record the data in an activity log.

300-city World Time

Simple phone operations can be used to configure World Time settings. You can select one of 300 cities by touching the one you want on a world map or a city list.

Location Indicator

The press of a watch button registers your current location with the phone app. After that, the watch’s second hand will indicate the bearing back to the registered location, while the digital display shows the distance to the location.

Mode Customization

The phone app can be used to enable or disable the display of specific modes, and even the sequence in which modes appear. You can configure settings so only the modes you use are displayed, or to cause the modes you use the most to be displayed first. You can also customize what information appears on the watch’s digital display.

Auto Time Adjustment

The watch automatically connects with your phone and adjusts your Home Time and World Time settings four times a day. If you travel to a different time zone, you can adjust your current time setting with the press of a button.

Accurate Time System

The watch adjusts its current time zone, summer time setting, and current time settings based on the time (UTC) and location data it obtains from an on-line time server via your phone.

Phone Finder

The touch of a watch button causes your phone to sound a tone.



Improved readability, easier operation, and outstanding comfort.

  • Soft Urethane Band

    High tensile strength and durability along with a comfortable fit to the wrist.

  • Slide Lever

    This mechanism simplifies band removal and attachment for quick and easy band replacement, cleaning, and maintenance.

List of Countries and Geographic Areas where Product Conforms to Radio Laws or Has Been Approved(Opens the List of Countries and Geographic Areas where Product Conforms to Radio Laws or Has Been Approved website in new window)

・The screen design is subject to change without notice.
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・Other company and product names are generally registered trademarks or trademarks of their respective owners.


    The app automatically records altitude data from the watch and GPS data from the smartphone. The user can also manually acquire altitude data at any point and plot that point on the trek route.


    Displays the calories burned as calculated based on step count and altitude data, saving it as an activity log.


    The user can operate the watch buttons to save the current location in the app. In this mode, the compass bearing of the saved location point is indicated by the second hand of the watch and the distance is indicated on the LCD.


    Using the app, the user can turn the watch modes on or off and change the sequence in which the modes appear on the display. This allows the user to customize the display for the intended use, for instance showing only certain functions or changing the sequence to show frequently used functions first. The default content on the LCD can also be customized.


    Altitude measurement values on the watch are automatically adjusted based on altitude data acquired from the smartphone GPS.


    The watch connects to the app to automatically download global time updates such as time zone changes and daylight savings time (DST) data by country. The time rules are stored on the watch to automatically adjust the time based on the latest data.


    The user can set the world time for more than 300 cities simply by selecting a city from the world map or city list in the app.


    By operating the watch, the user can trigger an audible alert on the mobile phone even if it is set to silent mode. This helps in locating the phone.

  • Mineral Glass

    Hard glass resists scratching

  • Crown


  • Case / bezel material: Resin / Aluminum
  • Resin Band
  • Mineral Glass
  • Direction Bezel
  • 200-meter water resistance
  • Double LED light
    LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
    LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  • Low-temperature resistant (–10°C/14°F)
  • Mobile link (Wireless linking using Bluetooth®)
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
  • Digital compass
    Measures and displays direction as one of 16 points
    Measuring range: 0 to 359°
    Measuring unit: 1°
    60 seconds continuous measurement
    Hand indication of north
    Magnetic declination correction
    Direction calibration (2-point calibration, figure eight calibration, auto calibration)
  • Altimeter
    Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
    Measuring unit: 1 m (5 ft.)
    Hand indication graph of altitude differential
    Others: Relative altitude readings (±100 m /±1000 m), Selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)
    *Changeover between meters (m) and feet (ft)
  • Barometer
    Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
    Measuring unit: 1 hPa (0.05 inHg)
    Hand indication of pressure differential (±10hPa)
    Atmospheric pressure tendency graph (last 20 hours or last 56 hours)
    Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
    The atmospheric pressure tendency graph can show the last 20 minutes or last 56 minutes of measurements. The hand indication of pressure differential shows values in units of ±1 hPa.
    *Changeover between hPa and inHg
  • Thermometer
    Measuring range: –10 to 60°C (14 to 140°F)
    Measuring unit: 0.1°C (0.2°F)
    *Changeover between Celsius (°C) and Fahrenheit (°F)
  • World time
    38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
  • Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range
    Power Saving: Auto sensor sleep state entry after fixed period of non-activity
  • Sunrise, sunset time display
    Sunrise time and sunset time for specific date
  • Moon data (moon age of the specific date)
  • Tide graph
  • Fishing timer
  • 1/100-second stopwatch
    00’00”00~59’59”99 (for the first 60 minutes)
    1:00’00~23:59’59 (after 60 minutes)
    Measuring unit:
    1/100 second (for the first 60 minutes)
    1 second (after 60 minutes)
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments)
  • 5 daily alarms
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping:
    Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
    Digital: Hour, minute, second, am/pm, month, date, day
  • Accuracy: ±15 seconds per month (with no signal calibration)
  • battery life: 2 years on CR2025
  • Size of case: 57.5×50.8×16.8mm
  • Total weight: 73g
  • Module: 5602
  • UPC: 889232280257



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Operation Guide (PDF)
Quick Reference (PDF)

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