Casio Pro Trek Solar Powered Triple Sensor Men's Watch | PRG-340L-5

Step confidently into the great outdoors with the Casio Pro Trek PRG-340L-5, a rugged, eco-conscious timepiece designed for explorers and nature enthusiasts. Combining advanced outdoor functionality with sustainable craftsmanship, this solar-powered adventure watch is built to perform wherever your journey takes you. Constructed with bio-based resin materials, the PRG-340L-5 Digital Men's Watch helps reduce environmental impact without compromising toughness. Its 51.7mm brown case features a directional rotating bezel, a dual-layer LCD, and Casio’s signature Triple Sensor technology — delivering precise altitude, barometric pressure, temperature, and compass readings in real time. Powered by Tough Solar technology, the watch harnesses light to maintain full functionality for up to 7 months on a single charge. The Super Illuminator LED backlight ensures exceptional visibility in dark environments, while the digital dual-layer display enhances clarity, displaying compass graphics on the top layer and detailed measurement data below. Designed for durability and comfort, the brown flame-retardant leather strap resists sparks and heat — perfect for outdoor cooking, camping, or trekking. With 100-meter water resistance and a lightweight 52g build, the PRG-340L-5 stands up to any challenge while remaining easy to wear all day long. Finished in earthy tones of coyote brown and black, this Pro Trek balances rugged utility with refined outdoor style, making it equally suitable for mountain trails or urban adventures. Sustainably built, solar-powered, and equipped with triple-sensor precision — the Casio Pro Trek PRG-340L-5 is a true companion for those who live to explore beyond boundaries. Now available at Watch Zone BD.

Sensor feature

Altimeter

Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.)

Measuring unit: 1 m (5 ft.)

Manual memory measurements (up to 30 records, each including altitude, date, time)

Auto log data (High/low altitudes, auto cumulative ascent and descent)

Trek log data (up to 14 records of high/low altitudes, auto cumulative ascent and descent of particular treks)

Others: Relative altitude readings (-3,000 to 3,000 m), Selectable measurement interval: 5 seconds or 2 minutes

*1 second for first 3 minutes only

*Changeover between meters (m) and feet (ft)

Barometer

Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)

Display unit: 1 hPa (0.05 inHg)

Atmospheric pressure tendency graph (Past 42 hours of readings)

Atmospheric pressure differential graphic

Barometric pressure tendency information alarm (beep and arrow indicate significant changes in pressure)

*Changeover between hPa and inHg

Digital compass

Measures and displays direction as one of 16 points

Measuring range: 0 to 359°

Measuring unit: 1°

60 seconds continuous measurement

Graphic direction pointer

Bidirectional calibration

Magnetic declination correction

Bearing memory

Thermometer

Display range: -10 to 60℃ (14 to 140℉)

Display unit: 0.1℃ (0.2℉)

*Changeover between Celsius (℃) and Fahrenheit (℉)

Watch Features

World time

31 time zones (48 cities + coordinated universal time), daylight saving on/off

Sunrise/sunset display

Sunrise, sunset time display Sunrise time and sunset time for specific date

Stopwatch

1/10-second stopwatch Measuring capacity: 999:59'59.9'' Measuring modes: Elapsed time, split time, 1st-2nd place times

Timer

Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

Alarm/hourly time signal

5 daily alarms (with 1 snooze alarm)

Hourly time signal

Light

LED backlight (Super Illuminator) Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

Light color

LED: White

Calendar

Full auto-calendar (to year 2099)

Mute feature

Button operation tone on/off

Energy saving feature

Power Saving (display goes blank to save power when the watch is left in the dark)

Battery display/alert

Battery level indicator

Run time

Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge)

27 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

Accuracy

Accuracy: ±15 seconds per month

Other features

12/24-hour format

Regular timekeeping: Hour, minute, second, pm, month, date, day

Duplex LC display