Casio Pro Trek PRT-B50-1ER

A "PRO TREK" model with enhanced outdoor usability, thanks to Bluetooth® connection to the dedicated "CASIO WATCHES" app. A Quad Sensor capable of measuring step count, direction, altitude, barometric pressure, and temperature. It records calories burned, altitudes reached by the watch, and routes recorded via the smartphone's GPS in the app. The simplification of various settings allows for automatic adjustment of the watch worldwide. The watch also automatically corrects the altimeter and calculates sunrise and sunset times. Furthermore, modes can be activated or deactivated and the watch can be customized by changing displays from the app. The fine resin back features a structure that integrates with the lugs. Both the button protection structure and the case are more robust. The large dial uses Arabic numerals for high visibility. Metal parts are used for hand indication, and colors reminiscent of the great outdoors are used as accents. Additionally, the entire surface of the urethane strap is enhanced with a 3D structure that prevents the strap from slipping, improving outdoor usability.

Case size (H × W × D): 57.5 × 50.8 × 15.8 mm
Weight: 64 g

Case and bezel material: resin
Strap: resin
Water resistance: 10 bar
Low-temperature resistance: down to -10 °C / 14 °F

Time adjustment: Bluetooth with automatic synchronization via smartphone

Power supply: CR2025 battery with approximate 2-year lifespan

Step counter: 3-axis accelerometer sensor with 0 to 999,999 steps display and automatic sensor power saving mode

Altimeter: -700 to 10,000 m (-2,300 / 32,800 ft), 1 m (5 ft) unit, altitude differential graph via hand, manual memory up to 14 records with altitude/date/time, automatic max/min altitude data, cumulative ascent and descent, relative altitude ±100 m / ±1000 m, measurement intervals 5 seconds or 2 minutes

Barometer: 260 to 1,100 hPa (7.65–32.45 inHg), pressure differential indicator ±10 hPa, atmospheric pressure trend graph for last 20 or 56 hours, significant atmospheric pressure change alerts

Digital compass: 16 directions, 0°–359° measurement with 1° accuracy, continuous 60-second measurement, north indication via hand, magnetic declination correction, automatic and manual calibration

Thermometer: -10 °C to 60 °C (14–140 °F), 0.1 °C / 0.2 °F accuracy

Smartphone connection: Mobile Link via Bluetooth® with CASIO WATCHES app
App functions: automatic time adjustment, simplified setting, world time for approx. 300 cities, Life Log data, location indicator, Location Memory, route log, mode/display customization, automatic altitude calibration, phone finder

Glass: mineral
Bezel: directional

World time: 38 time zones (38 cities + UTC) with daylight saving on/off and quick change between home city and international city

Sunrise / sunset: display of sunrise and sunset times for specific dates

Stopwatch: 1/100 second with capacity 00'00''00–59'59''99 (first 60 minutes) and 1:00'00–23:59'59 (after 60 minutes), elapsed time mode, split time, 1st and 2nd place times

Countdown timer: up to 24 hours with setting from 1 second to 24 hours

Alarms / hourly time signal: 5 daily alarms and hourly time signal

Illumination: double LED light

• Dial LED with auto light, Neon Illuminator, selectable duration (1.5 or 3 seconds) and afterglow
• Digital display backlight Super Illuminator with selectable duration (1.5 or 3 seconds)

Light color:
White LED
Neon Illuminator with blacklight LED

Calendar: full auto-calendar up to 2099

Mute function: button operation tone on/off

Accuracy: ±15 seconds per month without Mobile Link

Other functions: 12/24-hour format, hand shift feature

Time indication:
Analog: 3 hands (hour, minute with movement every 10 seconds)
Digital: hour, minute, second, AM/PM, month, date, day of the week