Casio Men's PRG-550-2CR "Pro Trek" Analog-Digital Sport Watch Tough Solar Power; Digital Compass (second hand acts as compass needle); Altimeter; Altimeter Memory; Barometer; Thermometer; 100M Water Resistant; Low Temperature Resistant (-10 C / 14 F); Full Auto LED Light with Afterglow; Neo-brite Luminous Hands and Markers; World Time; 29 times zones (29 cities + UTC); city code display; daylight saving on/off; 5 Daily Alarms; Hourly Time Signal; 1/100 second stopwatch Countdown Timer; Full Auto Calendar (pre-programmed until the year 2099); 12/24 Hour Formats; Button operation tone on/off; Battery Power Indicator; Power Saving Function; Storage Battery: Solar Rechargeable Battery; Approx. battery life: 6 months on full charge (without further exposure to light); Module 5213