Casio Protrek Solar Digital Mens Black/Green Watch PRW3510FC-1 PRW-3510FC-1DR

• Field Composite Band

• Case / bezel material: Resin / Stainless steel
• One-touch, slide-adjustable Double-lock three-fold clasp
• Resin Band
• Direction Bezel
• Sapphire Crystal
• Sapphire Glass with non-reflective coating
• 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 : 118g