Casio Alti-Thermo ALT-6000

Today's watch is another Casio designed for the outdoors, but not a G-Shock!

This one is one of the Twin Sensor Alt-Thermo watches called the ALT-6000. It came out in 1991, and has a look that is very similar to the G-Shock designs.

The watch has two displays, a normal 2-line LCD display (each line with 6 digits), and a green backed dot matrix LCD display.

It uses a 950 module to run the watch which has alarm and stopwatch functions as well as the sensor functions. Sensor-wise it has both a barometer based altimeter and a temperature sensor. The altimeter should be calibrated (by using the adjust button when in the height mode) for a known height before each trip but is quite accurate after that. The dot matrix shows a little graph of your height change while you use this. Up to 50 data points of height and temperature can be stored too.