
10 bar water resistant

Great for climbing

Stable solar power

Lets you know your direction

Lets you know the barometric pressure and altitude

PRO TREK
Get out into the great outdoors with a solar-powered PRO TREK featuring eco-friendly materials that care for the environment.
The PRO TREK line of authentic outdoor gear for nature lovers introduces the PRG-340, a timepiece that incorporates environmentally friendly biomass plastics* while delivering the same comfortable fit for your wrist.
The case and urethane band are crafted from biomass plastics made with castor oil and the band from biomass plastics made with corn. The duplex LCD lays out separate layers for the compass graphics and the clock functions, enabling a larger compass display for better legibility and easier navigation in a design that is both functional and beautiful.
The rotating bezel makes it simple to record compass readings, and the Tough Solar charging system keeps the advanced functionality on the go.
Get out and explore with a gentler footprint!
* Biomass plastics are polymers produced using chemical or biological synthesis of materials sourced from plant matter or other renewable organic substances and are widely thought to help reduce environmental impact and promote the shift to a circular economy.
54.7 × 51.7 × 15.1 mm
Low-temperature resistant (-10℃/14℉)
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)
87 g
150 to 205 mm
5 daily alarms (with 1 snooze alarm)
Hourly time signal
LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
12/24-hour format
Regular timekeeping:
Hour, minute, second, pm, month, date, day
Duplex LC display
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)
1/10-second stopwatch
Measuring capacity: 999:59'59.9''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Sunrise, sunset time display
Sunrise time and sunset time for specific date
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)
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
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