Detailed PRT-B70 technical specs are here →
About PRT-B70 in Short. Introducing the 200-meter water-resistant PRO TREK PRT-B70.
Bluetooth® lets you link with the PRO TREK Connected app on your phone to access features and 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.
These models have fine resin cases and wavy soft urethane bands that contribute to a comfortable fit to the wrist.
|Price||160$ *average Amazon Price, we may earn commission from purchases|
|Year of First Release||2020|
|Battery Type||CR2025 (ProTrek Batteries)|
Buy Battery on Amazon →
PRT-B70 Model Range *may be updated
*Want to be the first to know about new ProTrek Updates? Here we store all recent Monthly ProTrek Updates →
Official PRT-B70 Specs / Features *for base version PRT-B70-5
- 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)
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)
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
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)
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)
- Approx. battery life: 2 years on CR2025
- Size of case : 57.5×50.8×16.8mm
- Total weight : 73g
ProTrek PRT-B70 on the wrist!
Feedback from users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
+ use this product on a daily basis
+ love the style
– kind of complicated to program
The most distinctive specs of PRT-B70 *Editorial
— 200-meter water resistance (good for swimming but not for deep diving)
— ProTrek Connected App (you may manage all watch settings through your phone)
— Mobile link (Wireless linking using Bluetooth(R)) (for time sync with your phone data)
— Fishing timer (A FISH IN TIME feature uses fish icons to indicate catch probability throughout the day)
— Digital compass (measures and displays direction as one of 16 points)
— Step count (A built-in 3-axis acceleration sensor begins counting steps the moment you start to walk.)
— Thermometer (can measure and display the outside temperature in a range from -10 C to 60 C)
— Barometer (measures the air pressures and displays tendencies in the weather)
— Altimeter (The electronic mechanism “estimates” the altitude based on the air pressure)
— Low temperature resistant (stable operation of the watch is guaranteed even at a temperature of -20°C)
— Sunrise, sunset time display (Sunrise time and sunset time for specific date)
Official PRT-B70 Video
Other ProTrek PRT Watches *similar by price and functions but different by cases
These are not all ProTrek PRT Series. Here is a list of All ProTrek PRT Watches →
PRT-B70 Comparison Table with similar ProTrek Watches
Year of first Release
Bluetooth (via phone app)
Bluetooth (via phone app)
Radio-controlled (via atomic watch signals)
ProTrek Connected App
ProTrek Connected App
STN LCD (more distinct and bigger digits)
Cross-Frame Structure (disperses impacts, reinforcing the case’s)
Moon Data (good for fishing and tides)
Double LED light (Auto LED light, Super illuminator)
Double LED light (Auto LED light, Super illuminator)
Neobright and Double LED light
Case / bezel material
Resin / Aluminum
2 years on CR2025
2 years on CR2025
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size
Full features (if you want to know more)
Enjoy Japanese approaches to Travel and Functional ProTrek Watches!
Every adventure needs a reliable partner. PRO TREK is exactly the kind of watch that you need to meet the demands of your interests. PRO TREK is equipped with functions such as solar power operation, a digital compass, an altimeter, a barometer and a thermometer. The combination of innovative technology, a robust precision movement and state-of-the-art design makes the PRO TREK the perfect companion for all adventures under the open sky. Mountain or valley? Forest or meadow? River or lake? No matter what awaits you, you will be well-prepared to make any rough terrain your own thanks to the PRO TREK.
Experience for yourself how PRO TREK opens up new horizons while always pointing you in the right direction!
(A built-in 3-axis acceleration sensor begins counting steps the moment you start to walk.
0 to 999,999 step count display range.
Power Saving: Auto sensor sleep state entry after fixed period of non-activity)
Triple Sensor. PRO TREK watches are equipped with the latest Triple Sensor, version 3 technology, making them even more accurate than before. Three highly sensitive, extremely small sensors measure with absolute precision and instantly display changes in your environment. The precision of the digital compass, altimeter, barometer and thermometer is only possible with the Triple Sensor technology. At the same time, the three layer sensor is 95% smaller and consumes 90% less energy than before.
Altimeter. For all those who set their sights high
The built-in altimeter uses a pressure sensor to measure the current air pressure.
The measured air pressure is then used to provide an “estimate” of the current altitude.
The electronic mechanism in the watch is pre-programmed with “ISA values” (“International Standard Atmosphere”) used to convert pressure values into altitude values.
The air pressure and temperature generally become lower as the altitude increases.
These values define the connection between altitude, air pressure and temperature.
Barometer. The barometer measures the air pressures and displays tendencies in the weather.
The higher a person goes (ascent/terrain), the lower the barometric pressure will be.
An increase in air pressure usually signifies an improvement in the weather.
A decrease in air pressure usually means that bad weather is on its way.
The air pressure is displayed with an accuracy of 1 hPa (hectopascals).
The barometer can measure and display a range from 260 hPa to 1100 hPa.
The PRO TREK digital compass shows 16 compass points. The direction of magnetic north and the bearing are calculated by the compass’s directional sensor The directional sensor consists of two rectangular coils that detect slight tensions created by the earth’s magnetic field. Depending on the position and direction, these tensions vary in intensity. There is a non-magnetic resistance between the two coils, which absorbs the subtle changes in tension. With each new position, the values that are measured by the resistance change. A microprocessor converts the measurements so that they can be displayed clearly on your watch.
Thermometer. The thermometer is used to measure the outside temperature.
The temperature is displayed with an accuracy of 0.1 °C.
The thermometer can measure and display a range from -10.0°C to 60.0°C.
MOON PHASE DISPLAY.
The moon moves through a regular 29.53 day cycle, during which it appears to become either smaller or larger due to the relative position between the earth, moon and sun. The larger the angle distance between the moon and the sun*, the more of the moon we see illuminated.n Europe, the change from summer to winter time is also completely automatic.
TIDE GRAPH DISPLAY.
The tides refer to the periodic rise and fall of water in oceans, seas, bays and other bodies of water. This is caused mainly by the gravitation between earth, the moon and the sun. The tides rise and fall approximately every six hours.
Always be aware of the tidal patterns.
The watch can show the low and high tide phases for any given location or date. This can be quite useful, for example if you want to know the patterns of the tides at your destination in advance.
The watertightness of the CASIO watches complies with DIN 8310 and ISO 22810. These standards describe the various classes of watertightness and the test procedure used to determine watertightness.
These standards apply to the general wristwatch usage. Watches with metre indications for watertightness cannot be used immediately in this water depth, however, as water resistance metre indications are merely a pictorial representation of the test pressure. A wristwatch withstands the impact of water at the static pressure specified on the watch (e.g. 10 bar) and the theoretical immersion in water to the specified depth.
Recent News about PRT-B70
- [PROTREK FISHING] PRT-B70-2 notifies you of maximized fishing performance
- [ProTrek Video] PRT-B70 — enjoy FISHING TIMER alarm
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- [Protrek Ana-Digi] PRT-B70 with Fish Timer and Mission Log
- [ProTrek Review] PRT-B50-4ER – when the watch writes history from a blank slate
- [ProTrek Review] PRW-50Y-1B — Retro Tourist Watch
- [ProTrek Review] PRW-60FC-1A — black beauty with a composite band
You ask, we answer…
You may manage all watch settings through your phone.
It’s the electronic mechanism that “estimates” the altitude based on the air pressure.
It measures and displays direction as one of 16 points.
It measures the air pressures and displays tendencies in the weather.
Can’t find a ProTrek of your dream? There are more watches!