Stay one step ahead of Mother Nature with the Solar Powered PRG300, incorporating Casio's new Triple Sensor Version 3 engine. Advanced CASIO original technology has allowed for a 95% smaller direction sensor and 90% reduction in sensor power consumption compared to previous models. Despite their smaller size, the new sensors in this model delivers better accuracy and energy efficiency. This model can measure Altitude in 1m increments (previously 5m) and display compass readings with 60-seconds of continuous measurement (previously 20 seconds). In addition to the altimeter and digital compass, the watch's Barometer, incorporates a unique Barometric Pressure Tendency Alarm that alerts the wearer to sudden changes in pressure readings.

Design features include a compact, sleek case and soft urethane band for a better fit to the wrist. One-touch access to digital compass, barometric pressure/altitude, and temperature readings keep important information at your fingertips. Everything about these models is designed and engineered to make them essential pieces of outdoor gear.

• Tough Solar Power
• 100M 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 seconds
• 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: 8 months on full charge (without further exposure to light)
• Module 3443

Size of case/total weight
PRG300 56.0 x 47.0 x 12.6mm / 57g