Casio Pro Trek PAG240-1 - Jeremy Irvine - Beyond The Reach
This watch can be recognized by its two orange buttons and the strap (the Casio Pro Trek PAW1100-1V has similar orange buttons but different case and strap.)
The Casio Pro Trek PAG240-1 from the Pathfinder line-up is the successor to the Casio PAG40. The multifunctional outdoor watch has Casio's triple sensor functionality (Altimeter/Barometer, Thermometer, Digital Compass) and is equipped with Self-Charging, Tough Solar Power, Sunrise Sunset Data, Countdown Timer and 48-city World Time.
The tough solar power, thermometer and compass should come in handy when Jeremy Irvine's character is trying to escpape his attacker (played by Michael Douglas) in the scorching heat of a desert.