More powerful than ever, the Casio Tactical Frogman G-Shock Solar Powered Diving Watch GWF1000-1 was developed to be the perfect watch for all of your needs. Atomic Timekeeping and Tide & Moon Graphs have now been added to the Casio Tactical Frogman G-Shock Time Piece for Non-Stop, Self-Adjusting performance. Whether journeying underwater or on land, this amphibious masterpiece can take you there. For a an amazing way to make sure you are at the height of punctuality with an impressive time piece, choose the Casio Tactical G-Shock FrogMan Diving Solar Powered Wrist Watch. 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 (up to 5 times per day for China) 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 68.5kHz Tough Solar Power Shock Resistant ISO 200M Water Resistant Full Auto EL Backlight with Afterglow World Time 31 times zones (48 cities + UTC), city code display, daylight saving on/off Moon Data (moon age of the specific data, moon phase graph) Tide Graph (tide level for specific date and time) Dive time and surface interval measurement function Dive time: 1 second increments, up to 23:59'59 Surface interval: 1 minute increments, up to 47:59'59 Memory capacity: One set of data (dive time, dive start time and surface interval) 1/100 second stopwatch Measuring capacity: 23:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 4 Daily alarms and 1 Snooze Alarm Hourly time signal Battery power indicator Power saving function Button Operation Tone on/off Full auto-calendar (pre-programmed until the year 2099) 12/24 hour formats Accuracy: +/- 15 seconds per month Storage battery: Solar rechargeable battery Approx. battery life: 8 months on full charge (without further exposure to light) Comes with original box and papers. Excellent condition.