Casio Protrek Solar Digital Mens Black/Blue Watch PRW3510Y-1 PRW-3510Y-1DR

A silicon band and stainless steel black bezel, add a tough, unique look to the PRW-3510 series.

The watch takes the big case from ana/digi combos, but doesn’t clutter the screen with an analogue display. This leaves the digital numbers much more room on the screen, so even if you’ve got bad eyesight, you’re still able to see the time.

The Silicon band, mentioned above, is a new innovation, and can sometimes be better than resin when it comes to fitting your wrist.

When you’re travelling, it sometimes becomes a hassle to keep changing the time. That’s why Casio gave the PRW-3510Y a function called Radio Control. This mode takes your position from one of 6 satellites, and automatically sets the time based on where you are.

Whether you’re on land or on sea, you can still keep the watch on you, thanks to the 200m water resistance. As long as you don’t press buttons while you swim, you don’t have to worry about taking the watch off.

• Case / bezel material: Resin / Stainless steel
• Silicon band
• Direction Bezel
• Mineral Glass
• Black IP
• 200-meter water resistance
• LED backlight (Super Illuminator)
• Full auto LED light, selectable illumination duration,afterglow
• Solar powered
• Low-temperature resistant (–10°C/14°F)
• Time calibration signal reception
• Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)
• *5 times a day for the Chinese calibration signal
• Manual receive
• The latest signal reception results
• 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
• 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
• 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
• Thermometer
• Display range: –10 to 60°C (14 to 140°F)
• Display unit: 0.1°C (0.2°F)
• *Changeover between Celsius (°C) and Fahrenheit (°F)
• World time
• 31 time zones (48 cities + coordinated universal time), daylight saving on/off
• Sunrise, sunset time display
• Sunrise time and sunset time for specific date, daylight pointers
• 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)
• 5 daily alarms (with 1 snooze alarm)
• Hourly time signal
• Battery level indicator
• Power Saving (display goes blank to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping: Hour, minute, second, pm, year, month, date, day
• Accuracy: ±15 seconds per month (with no signal calibration)
• Approx. battery operating time:
• 7 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)
• Size of Case: 56.9×53.4×14.5mm
• Total Weight: 94g