Casio PRG-300CM-4DR Protrek Watch.

PRO TREK PRG-300 introduces camouflage color, with a combination of jungle green and sunset orange, showing the original wild style. The large-scale digital display is equipped with high-brightness illumination, which can clearly identify various information such as air pressure, azimuth and altitude. It has many powerful functions such as earthquake resistance, solar power, and waterproof 100 meters, so that users can adapt to various difficult environments in the outdoor.

• Case / Bezel Material: Resin
  
• Resin strap
• Mineral glass
• Solar power
• Waterproof 100 meters
• High-brightness LED lighting 
• fully automatic LED lighting (optional lighting time 1.5 seconds or 3 seconds)
• Low temperature resistant device (-10°C/14°F)
• Digital compass 
• 16 azimuth measurement and display 
• Measurement range: 0°~359° 
• Unit of measurement: 1° 
• continuous measurement (60 seconds continuous automatic detection) 
• Direction indication 
• bidirectional correction and north correction 
• geomagnetic declination correction 
• orientation memory
• Height measurement 
• range: -700~10,000m (-2,300~32,800ft.) 
• Unit: 1m (5ft.) 
• Manual memory measurement (up to 30 strokes, each containing height, date and time) 
• Automatic memory measurement (including maximum/minimum height) , increase in accumulation / cumulative decline in height) 
• road log value (up to 14 strokes, each pen contains the highest / lowest height, cumulative increase / cumulative decline height, special steep slope) 
• Other: relative height (-3,000 ~ 3,000m), measurement interval Choice (5 sec/2 sec) 
• * 1 second measurement interval 
• * meter (m) and inch (ft.) switching
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• Air pressure measurement range: 260~1,100hPa (7.65~32.45 inHg) 
• Unit: 1hPa (0.05inHg)　
• pressure trend graph (recorded in the past 42 hours) 
• pressure difference map 
• instantaneous climate change warning 
• *hPa and inHg switch
• Temperature measurement 
• range: -10~60°C (14~140°F) 
• Unit: 0.1°C (0.2°F) 
• *°C and °F switching
• World Time 
• 31 Time Zone (48 cities + corresponding global time), daylight saving time (on/off)
• Sunrise/sunset time indication
• Code table 
• measurement unit: 1/10 second 
• Measurement range: 999:59’59.9″ 
• Measurement mode: elapsed time, halfway time, time difference between first place and second place
• Countdown 
• measurement unit: 1 second 
• measurement range: 24 hours 
• start time setting range: 1 minute ~ 24 hours
• 5 independent alarms (including a group of snooze alarms)
• report punctually
• Power indicator
• Power saving function (when entering the dark state, the watch will automatically turn off the screen display)
• Fully automatic calendar (~2099)
• 12/24 hour switching
• Operation sound (on/off)
• Time mode: hour, minute, second, PM, year, month, day, week
• Accuracy: ±15 seconds per month