Casio PRW-3500T-7DR Protrek Watch

Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China) Receives time calibration radio signals which keep the displayed time accurate Auto receive function (up to 6 times per day/up to 5 times per day for China) Manual receive function Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, BPC 68.5kHz

• Tough Solar Power
  
  
• 200M Water Resistant
  
  
• Low Temperature Resistant (-10 C / 14 F)
  
  
• Altimeter Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft) Measuring unit: 1 m (5ft) 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
  
  
• Digital Compass Measures and displays direction as one of 16 points Measuring range: 0 to 359 degrees Measuring unit: 1 degree 60 seconds continuous measurement Graphic direction pointer Bidirectional calibration and Northerly calibration function Magnetic declination correction Bearing memory
  
  
• 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 Atmospheric pressure differential graphic Atmospheric pressure change indicator (arrow indicates significant change in pressure)
  
  
• Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F)
  
  
• Full Auto LED (Super Illuminator) Backlight with Afterglow
  
  
• World Time 31 time zones (48 cities + UTC), city name display,
  daylight saving on/off
  
  
• Sunrise/Sunset Data Sunrise time and sunset time for specific date/ daylight pointers
  
  
• 5 Daily Alarms (4 one-time and 1 snooze alarm)
  
  
• Hourly Time Signal
  
  
• 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 ans 1-hour increments)
  
  
• Full Auto Calendar (Pre-programmed until the year 2099)
  
  
• 12/24 Hour Formats
  
  
• Button operation tone on/off
  
  
• Accuracy: +/- 15 seconds per month (with no signal calibration)
  
  
• Storage Battery: Solar Rechargeable Battery
  
  
• Battery Level Indicator
  
  
• Power Saving Function
  
  
• Approx. Battery Life: 7 months on full charge (without further exposure to light)