PRW35LD-5D

Regular price $599.00
Size Chart

Revel in the joy of being outdoors under the starry skies with a PRO TREK as committed to the environment as you are.

Introducing the PRW-35LD with case, band, and case back made with bio-based resin, for an even more environmentally responsible design.

Featuring the first phosphorescent LCD in a Casio watch, this PRO TREK is the ideal companion for nighttime outdoor activities. Luminous material beneath the digital display emits a soft glow that enhances visibility so you can quickly check the time in the dark. Just 1 minute of exposure to a 200-lumen mountaineering headlamp from 5 cm away can provide enough power to illuminate the display for up to 1 hour.

In terms of style, too, the soft urethane band is tough and flexible, designed in a dark coyote brown that says outdoor gear all the way.

Packed with functionality, this timepiece is equipped with Triple Sensor to deliver compass bearing, barometric pressure, temperature, and altitude readings. Other handy features include Multiband 6, Tough Solar, and more, for the advanced functionality and practicality you need to be prepared for camping or hiking in the dark.

2 year warranty

Basic Information

  • Band
    Bio-based resin band
  • Case and bezel material
    Bio-based Resin / Stainless steel
  • Case size (L × W × H)
    51.2 × 44.6 × 13 mm
  • Environmental resistance
    Low-temperature resistant (-10℃/14℉)
  • Power supply and battery life
    Tough Solar (Solar powered)
  • 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)
  • Time adjustment
    Radio-controlled Watch; Multi band 6
  • Water resistance
    100-metre water resistance
  • Weight
    45 g

Exterior

  • Compatible band size
    145 to 215 mm
  • Glass
    Mineral Glass

Features

  • Accuracy
    Accuracy: ±15 seconds per month (with no signal calibration)
  • Alarm / hourly time signal
    5 daily alarms (with 1 snooze alarm)
    Hourly time signal
  • Battery display alert
    Battery level indicator
  • Calendar
    Full auto-calendar (to year 2099)
  • Energy saving feature
    Power Saving (display goes blank to save power when the watch is left in the dark)
  • Light
    LED backlight (Super Illuminator)
    Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Mute feature
    Button operation tone on/off
  • Other features
    12/24-hour format
    Regular timekeeping:
    Hour, minute, second, pm, year, month, date, day
    Phosphorescent LCD
  • Run time
    Approx. battery operating time:
    6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
    22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Stopwatch
    1/10-second stopwatch
    Measuring capacity: 999:59'59.9''
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Sunrise / sunset display
    Sunrise, sunset time display
    Sunrise time and sunset time for specific date, daylight pointers
  • Time adjustment details
    Time Calibration Signals
    Station name: DCF77 (Mainflingen, Germany)
    Frequency: 77.5 kHz
    Station name: MSF (Anthorn, England)
    Frequency: 60.0 kHz
    Station name: WWVB (Fort Collins, United States)
    Frequency: 60.0 kHz
    Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
    Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
    Station name: BPC (Shangqiu City, Henan Province, China)
    Frequency: 68.5 kHz
  • 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)
  • World time
    World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off

Phosphorescent LCD: Useful for nighttime activities

The first phosphorescent LCD in a Casio watch. A phosphorescent sheet beneath the digital display emits a soft green glow in the dark. Just 1 minute of exposure to a 200-lumen mountaineering headlamp from about 5 cm away can provide enough power to illuminate the display for up to 1 hour. This feature is useful for quickly checking the time in the dark.

Comfort design with enhanced fit and operability

The smaller case does not impede wrist movement and won’t get caught on your shirt cuff. The compact size also sits comfortably on slimmer wrists, too. The case sides feature large direct-measurement buttons that allow single-push measurement of compass bearing, barometric pressure/temperature, and altitude. The non-slip knurled finish makes for more intuitive and accurate button operation, even when wearing gloves.

Attention to materials: Bio-based resin

Key resin components used in the band (PRW-35LD), case, case back, and more are made with bio-based resin, a material expected to help reduce environmental impact.

Triple Sensor (digital compass, barometer/altimeter, and thermometer) senses natural changes

Multiband 6 radio control and solar power for accurate timekeeping

Super Illuminator (high-brightness full-auto LED backlight) for maintaining watch readability in the dark

Feature List

  • Minimalist black icon of a person walking next to a simple clock face, representing punctuality or time management.

    Keeps yourself in time

  • Black icon of a smartwatch charging via solar energy with a battery level indicator and sun rays.

    Stable solar power

  • Black icon of a snorkeler swimming horizontally next to the number 10, indicating a 10-bar water resistance rating.

    10 bar water resistant

  • Black icon of a hiker with a backpack and walking stick next to a north-pointing compass symbol.

    Lets you know your direction

  • Minimalist black icon featuring a jagged mountain silhouette below a simple line graph on a white background.

    Lets you know the barometric pressure and altitude

  • Black icon of a person walking next to a thermometer, representing temperature and physical activity.

    Lets you know the temperature