Features and Functions: Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China)Receives time calibration radio signals which keep the displayed time accurate Auto receive function (up to 6 times per day)Manual receive function Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, China BPC 68.5kHzWorld Time31 times zones (48 cities + UTC), city code display, daylight saving on/off4 Daily alarms and 1 Snooze Alarm Hourly time signal1/100 second stop watch Measuring capacity: 23:5959.99Measuring mode: Elapsed time, split time, 1st-2nd place timesTough Solar Power Storage battery: Solar rechargeable battery Battery power indicator Power saving function Approx. battery life: 10 months on full charge (without further exposure to light)Shock Resistant200M Water Resistant Full Auto EL Backlight with AfterglowCountdown Timer Measuring unit: 1 second Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Description: The most durable digital and analog-digital watches in the industry, trusted by military personnel, law enforcement, surfers and outdoor enthusiasts around the world. Shock-resistant construction protects against all sorts of impact and vibration. You can wear your G-SHOCK in all sorts of situations, from working with water in daily life and taking a shower to participating in water activities such as swimming, surfing or jet skiing. With the EL Backlight, you can see the watch face in any situations without light.