G-SHOCK" is a shock-resistant watch that has established a new concept of toughness in watches. This model is based on the G-STEEL series, which combines metal and resin materials, and comes in popular black and gold colors. Shock-resistant construction】Core technology of G-SHOCK in pursuit of toughness, protecting the module with a shock-resistant construction. 20 atmospheric pressure waterproofing】Available for use in a wide variety of locations and situations, from everyday water work to water activities such as swimming, surfing, and jet skiing. Mobile Link function] Functions can be linked via BluetoothⓇ communication with compatible cell phones. Other Product Specifications】Tough solar power / needle evacuation function / world time / stopwatch / timer / time alarm / battery indicator display / power saving function / fully automatic calendar / 12/24-hour display system switching / operation sound ON/OFF switching function / date/day display / double LED Double LED light Details: From the G-SHOCK line of toughness watches that has continued to evolve in pursuit of insatiable strength since its launch in 1983, this model is based on the G-STEEL series, which combines different materials of metal and resin, in popular black and gold colors. The black base with gold-colored dial is a gorgeous fashion item with a design that can be used in a wide range of applications. The GST-B500 is used as the base model. The G-STEEL series, which combines toughness and design, comes in popular colors such as black and gold, making it a cool design that can be used for a wide range of purposes. Shock-resistant construction - Tough Solar (solar recharging system) - 20 ATM water resistance - Mobile Link function (functions linked via Bluetooth communication with compatible cell phones) - Hand evacuation function (when the hands overlap with the LCD display and are difficult to see, the hands can be temporarily moved away from the LCD display) - World time: 38 cities around the world World time: 38 cities (38 time zones, with automatic daylight saving time setting function) + UTC (Universal Time Coordinated) time display, home time city switching function ● Stopwatch (1/100 second (less than 1 hour)/1 second (more than 1 hour), 24-hour counter, with lap/split function) ● Timer (set unit: 1 second, max. (set unit: 1 second, maximum set time: 60 minutes, measured in 1-second increments) ●Timer (set unit: 1 second, maximum set time: 60 minutes, measured in 1-second increments) ●Time alarm (5 alarms and time signal) ●Battery indicator display ●Power saving function (turns off display after a certain period in the dark to save power) ●Fully automatic calendar ●12/24-hour display system switching ●Operation sound ON/OFF switching function ●Date display (month/date display switching) Date display (month/day switching) ●Day of the week display (English, Spanish, French, German, Italian, Russian) ●Double LED lights: LED light for dial (with super illuminator, afterglow function, afterglow time switching (1.5 sec./3 sec.)), backlight for LCD part (with super illuminator, afterglow function, afterglow time switching (1.5 sec./3 sec.)). /When not connected to a smartphone, the watch operates with normal quartz precision (average monthly difference ±15 seconds). Automatic time correction ■Easy clock setting ■World time: approx. 300 cities ■Time & place ■Reminder ■Cell phone search* To establish a communication connection with a smartphone, the dedicated application "CASIO WATCHES" must be installed. Compatible with our specified iPhone and Android smartphones. Please refer to the website for details such as confirmed handsets and OS compatibility status. Only devices equipped with Bluetooth are supported. Bluetooth is a registered trademark of Bluetooth SIG, Inc. iPhone" is a trademark or registered trademark of Apple Inc. in the United States and other countries. Android" and "Android logo" are trademarks or registered trademarks of Google LLC. All other company and product names are trademarks or registered trademarks of their respective owners. GST-B500BD is certified under the Japanese Radio Law. *The Mobile Link function is dependent on the specifications of the handset itself and the service of the telecommunications carrier in the country where the handset will be used, and will differ for each individual handset. Contents] Main unit, box, instruction manual, and warranty card are included in the instruction manual.