Casio G-Shock x G-LIDE ft. Extreme Sports Men Casual Sports Rectangle 200m Water Resistant Watch GBX-100NS-1D GBX100NS GBX100 GBX-100 GBX-100NS Ride the surf with confidence, knowing the tide and daylight conditions at 3,300 global surf spots. Stay connected with smartphone integration, and track vital surf data on a crystal-clear high-resolution MIP LCD screen. Built to withstand extreme waves, this rugged timepiece combines style and functionality for the ultimate surfing experience. Battery Life / Accuracy Approximately 2 years (+/-15 seconds per month) Crystal Mineral crystal Light LED backlight (super illuminator, auto light switch, selectable illumination duration, afterglow) Case & Band Material Resin / stainless case with resin band Water Resistance 200m / 20 bar Case Size Thickness: 14.7 mm Diameter: 46.0 mm Length: 50.9 mm Other Specifications Casio G-Shock x G-LIDE ft. Extreme Sports Shock resistant Training function (distance, speed, pace and other calculated values based on accelerometer) Mobile link (wireless linking via Bluetooth) World time (38 time zones) Moon data (moon age of the specific date) Tide graph (tide level for specific date and time) Sunrise, sunset time display 1-second stopwatch Countdown timer 4 daily alarms with snooze Full auto-calendar (to year 2099) Button operation tone on/off Power saving (display goes blank to save power 3 hours everyday) 12/24-hour format Flight mode Regular timekeeping (digital display) User profile creation Vibration on/off Life log data (daily step count, monthly running distance display) Training data (up to 100 runs, up to 140 laps per run) Elapsed time, distance, pace, calories burned