Casio - G-Shock - Opal Face - GLS5600KL-1 - Heating up this summer season with their synthetic opal dial treatments and metallic bands, the new Opal Face from G-Shock glitter no matter how you look at them. But don't let the glitter fool you. G-Shock's hollow-case construction and legendary 5600 case design deliver omni-directional shock resistance, while 200M water resistance gives added protection when it comes time to cool things down. Shock Resistant - 200M Water Resistant - Low Temperature Resistant (-20 C/-4 F) - Auto EL Backlight with Afterglow - World Time: 29 time zones (48 cities), city code display, daylight saving on/off - 4 Multi-function Alarms & 1 Snooze Alarm - Hourly Time Signal - Flash alert - Flasher with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm, countdown timer progress beeper, stopwatch auto-start - 1/100 second dual stopwatches (ST1, ST2) - Countdown timer - Full Auto Calendar (pre-programmed until the year 2099) - 12/24 Hour Formats - Button operation tone on/off - Accuracy: +/-15 seconds per month - Battery: CR2025 - Approx. battery life: 3 years - Module 3178 - Size of case/total weight: GLS5600KL 46.7 x 43.2 x 12.7mm / 52.5g