The Casio Protrek Series Solar Power Watch PRG-80-1VER has an especially long list of practical functions to assist the most intrepid adventurer.

Features

• Full Auto automatically deactivates the Auto electro-luminescent backlight function when surrounding light is sufficient and activates it under dim light or dark conditions
• The timekeeping module is designed for operation at very low temperatures (–10°C resistance does not apply to the direction sensor)
• A solar cell provides power for operation
• Duplex LCD: two liquid crystal panels make it possible to select from among different display patterns
• A built-in pressure sensor measures barometric pressure, which is shown on the display
• A built-in temperature sensor measures the temperature
• A built-in direction sensor detects magnetic north
• A pressure sensor detects changes in the air pressure and converts the result into an altitude up to 10,000 m
• Height gain function sums all the metres you have climbed so that you can see at a glance the total ascent on a tour
• World Time displays the current time in major cities and specific areas around the world
• Stopwatch function (1/100 sec to 10 hr)
• Timer counts down from a start time specified by you
• Yacht timer is used to time the start of regattas; countdown period can be set from 1 to 10 min
• Five independent alarms for flexible reminders of important appointments
• Indicator shows the current battery level
• Full auto calendar with correction for leap years
• Times can be displayed in either a 12-hour or 24-hour format
• Hard mineral glass resists scratching
• Resin case
• Resin band
• Water resistance classification 10 bar/100 m – perfect for swimming and snorkelling (not a diving depth indication)
• Accuracy 15 sec per month
• Type of battery CTL1616
• Dimensions (H x W x D) approx. 62.3 x 52.2 x 14.4 mm
• Weight approx. 77 g