The Casio Twin Sensor Barometer SGW300H-1 provides capabilities that measure temperature and altitude/air pressure.

A large LCD shows at-a-glance readouts of the data produced in each mode. A high-performance pressure sensor provides altitude readings up to 10,000 meters and automatic air pressure readings every two hours. The SGW300H-1 measurement results are displayed graphically, which can be used to predict upcoming weather with reasonable accuracy.

The Twin Sensor Barometer SGW300H-1 offers large function buttons for one-push operation of illumination and altitude measurement. 100-meter water resistance and low-temperature resistance up to -10C/14F allow the Casio Twin Senor Barometer to be worn in the rain, around the water and just about everywhere else. Other functions include World Time, stopwatch, 5 alarms and much more. An aluminum bezel and five screws provide a handsome look of quality.

An ideal watch for the marine and outdoor enthusiasts.  Comes with a black resin band for easy care.