Casio Pro Trek PRG-270-1 Watch Overview:

The Casio PRG-270-1 ProTrek features an analog-digital display and Version 3 Triple Sensor technology. In addition to its fast and precise sensors for taking bearing, altitude, and barometric pressure readings, it's also capable of alerting the wearer to significant changes in barometric pressure by an alarm and a unique indicator on the digital display.  The Triple Sensor Version 3, an advanced Casio technology that makes it possible to pack sensor that are 95% smaller than those of previous models into a totally new type of compact PRO TREK. Despite their smaller size, the new sensors in these models deliver higher reading accuracy and improved energy efficiency.

An auto hand shift feature momentarily moves hands away of the digital window when you check displayed readings, this makes them easier to read during certain time in the day when the hands would be covering the digital display. Other features include dual LED illumination of both the face and digital display, Smart Access, Tough Solar, and more. Everything about this watch is designed and engineered to make it the ultimate in ease of operation and reliability.

• Triple Sensor: Compass, Barometer/Thermometer, Altimeter
• Multiband6 reception of six time calibration signals: United States, Japan (2), Germany, England, China
• Tough Solar ensures stable operation even when using power-hungry functions.
• 5 Daily Alarms
• Countdown Timer
• Sunrise/Sunset Data
• 100M water resistance
• Low temperature resistant (–10ºC/14°F)

Black resin band digital with neutral face.

Case size (L× W× H) 54.6 × 52.4 × 15 mm
Weight 67 g

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

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

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 indicates significant changes in pressure)

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)