Casio Men's PRW-3500Y-1CR Pro Trek Quartz Solar Atomic Digital Display Black Watch

Solar powered. Shock resistant. Triple Sensor: Compass, Barometer/Thermometer, Altimeter. Signal and manual-based time calibration. 31 time zones (48 cities + coordinated universal time). Digital face with electroluminescent backlight. Hourly time signal. 5 daily alarms and 1 snooze alarm. Countdown timer. Auto-calendar pre-programmed until the year 2099. Battery power indicator. Battery life:7 months on rechargeable battery without exposure to further sunlight.23 months with power save function on after full charge. Button tone on and off.