Casio Pro Trek PRG-340-1

Venture into the great outdoors with a solar-powered PRO TREK made with eco-friendly materials that respect the environment. The PRO TREK line of authentic outdoor watches for nature lovers introduces the PRG-340, a model that incorporates low-environmental-impact biomass plastics*, while ensuring the same comfortable fit on the wrist. The case and urethane band are made from biomass plastic with castor oil, while the biomass plastic band is made with corn. The duplex LCD features separate levels for the compass graphics and watch functions with a larger compass display for better readability and easier navigation in a beautiful and functional design. The rotating bezel makes it easy to record compass values, while the Tough Solar system keeps advanced functions going on the go. Get out and explore with less impact on the environment! * Biomass plastics are polymers produced using chemical or biological synthesis from plant matter or other renewable organic substances and are widely understood to help reduce environmental impact and promote the transition to a circular economy.

Case size (L× W× H): 54.7 × 51.7 × 15.1 mm
Weight: 54 g

Case and bezel material: Bio-based resin
Band: Biomass plastic soft urethane band, adjustable from 145 to 215 mm
Water resistance: 10 bar
Low-temperature resistance: -10°C/14°F

Power supply: Tough Solar (Solar powered)

Altimeter: -700 to 10,000 m (-2,300 to 32,800 ft.), 1-m (5 ft.) unit, Manual memory measurements (up to 30 records, each including altitude, date, time), Auto log data (High/low altitudes, cumulative ascent and descent), Trek log data (up to 14 records of high/low altitudes, cumulative ascent and descent of particular treks), Relative altitude (-3,000 to 3,000 m), Measurement interval selectable: 5 seconds or 2 minutes

Barometer: 260 to 1,100 hPa (7.65 to 32.45 inHg), Barometric pressure tendency graph (last 42 hours of readings), Barometric pressure differential graphic, Barometric pressure change alarm (beep and arrow indicate significant changes in pressure)

Digital compass: Measures and displays direction as one of 16 points, Measuring range: 0 to 359°, 1° unit, 60 seconds continuous measurement, Graphic direction pointer, Bidirectional calibration and Northerly calibration function, Magnetic declination correction, Bearing memory

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

Glass: Mineral Glass
Bezel: Directional bezel

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

Sunrise, sunset display: Sunrise and sunset times for specific dates

Stopwatch: 1/10-second stopwatch, Measuring capacity: 999:59'59.9'', 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 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: Full auto LED backlight (Super Illuminator), Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Light color: White

Calendar: Full auto-calendar (to year 2099)

Mute feature: Button operation tone on/off

Power saving function: 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: ±15 seconds per month

Other features: 12/24-hour format, Regular timekeeping: Hour, minute, second, pm, month, date, day

Display: Duplex LC display