A perfect balance between luxury and toughness, this G-Shock GSTB500GD-1A G-Steel Gold Tone Men’s Watch is unlike any other. A gold watch is a staple in any wardrobe, but some people need the toughness and durability that G-Shock offers, which is what makes this watch so desirable. Crafted in the warm tones of yellow gold with black lowlights that contrast heavily, this watch is a must-have. Complete with a digital display, Bluetooth capabilities, a backlight and water resistance, you can get through any adventure with the class of a gold watch. - 46.6×48.9×12.8mm Case Size - 143g Weight - Resin/Stainless steel Case and Bezel - Stainless Steel Band - Carbon Core Guard structure - Shock Resistant - 200 Meters Water Resistant - Tough Solar (Solar powered) - Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®) - Time & place - Reminder - Phone finder - Mineral Glass - World time: 38 time zones (38 cities coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping - Stopwatch - Timer - Alarm/hourly time signal - Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) - Calendar: Full auto-calendar (to year 2099) - Mute feature: Button operation tone on/off - Power Saving (display goes blank to save power when the watch is left in the dark) - Approx. battery operating time: *7 months on rechargeable battery (operation period with normal use without exposure to light after charge) *18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) - Accuracy: ±15 seconds per month (with no mobile link function) - Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)