G-SHOCK" is a shock-resistant watch that has established a new concept of toughness in watches. The GA-B001 series is a model equipped with a smartphone link. Shockproof construction】Core technology of G-SHOCK in pursuit of toughness, protecting the module with 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】World time / Stopwatch / Timer / 5 time alarms and time signal / Fully automatic calendar / 12/24-hour display system switching / Operation sound ON/OFF switching function / Date display / Day of the week display / Double LED light Details: From the toughness watch G-SHOCK, which has continued to evolve in pursuit of insatiable strength since its launch in 1983, the GA-B001 series is equipped with a smartphone link. This model adopts a design consisting of separate upper and lower bezels, and the face is also finished with attention to detail with hour and 9 o'clock disc hands never before seen on a G-SHOCK. The color variations include black, turquoise blue, and a new color, red, with a skeleton resin and gradation of colors that can be used in a wide range of situations from fashion to outdoor activities. In addition, the watch is equipped with BluetoothⓇ to link with a smartphone using a dedicated application, and the watch will notify information updates in the application on the watch display. With the smartphone link and new design, G-SHOCK has achieved a new level of toughness. When not linked to a smartphone, the watch operates with normal quartz precision (average monthly difference of ±15 seconds). ●Hand-removal function (when the hands overlap with the LCD display and are difficult to see, the hands can be temporarily removed from the LCD display) ●World time: 38 cities worldwide (38 time zones, with automatic daylight saving time setting function) + UTC (Coordinated Universal Time) time display, home time city switching function ●Stopwatch (1/100th of a second) Watch (1/100 second (less than 1 hour)/1 second (more than 1 hour), 24-hour counter with split) ●Timer (set unit: 1 second, maximum set time: 24 hours, measured in 1-second increments) ●5 time alarms and time signal ●Fully automatic calendar ●12/24-hour display system switching ●Operation sound ON/OFF switching function ●Date date display (month/day display switching) - day of the week display (six language switching: English, Spanish, French, German, Italian, and Russian) - double LED light: LED light for dial (with super illuminator, afterglow function, and afterglow time switching (1.5 seconds/3 seconds)), LED backlight for LCD (super illuminator, afterglow function, afterglow time Automatic time correction ■Easy clock setting ■World time: approx. 300 cities ■Application information ■Time & place ■Cell phone search **In order 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 devices 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. Other company and product names are trademarks or registered trademarks of their respective owners. GA-B001G and GA-B001 are 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 is used, and varies from one individual to another. Contents] Main unit, box, instruction manual, and warranty card are included in the instruction manual.