Peace, mercy, and blessings of God be upon you. I have a watch. Casio Pro Trek From the 3500 PRW series. Tough Solar: Powered by solar energy and light charging. Triple Sensor: Contains triple sensors for measurement (altitude, barometric pressure/temperature, and digital compass). Resistance: Water resistant up to 200 meters and resistant to low temperatures. And it has other features. This is a useful watch. Brand: Casio