Description
Casio G-SHOCK GRAVITYMASTER Bluetooth Solar Men Watch - Black | GR-B300-1ADR
Casio G-SHOCK GRAVITYMASTER Bluetooth Solar Men Watch - Black | GR-B300-1ADR combines aviation-inspired styling with a wide, highly readable analog dial. It features Tough Solar charging, Bluetooth® Smartphone Link, Carbon Core Guard construction, Flight Log recording, Dual Time, and 200-meter water resistance.
Casio G-SHOCK GRAVITYMASTER Bluetooth Solar Men Watch - Black | GR-B300-1ADR belongs to the MASTER OF G – AIR collection and is designed as aviation-inspired professional gear for demanding environments. Its seamless black exterior, dimensional indexes, and large-diameter triple-layer dial provide strong visibility and a rugged technical appearance.
The watch uses a Carbon Core Guard structure that combines lightweight carbon-fiber-reinforced resin with excellent shock resistance, rigidity, and corrosion resistance. Bio-based resin is used in key case and band components, while the contoured exterior provides a secure and comfortable fit.
Tough Solar technology converts natural and artificial light into power. Bluetooth® Smartphone Link connects the watch to the CASIO WATCHES app for automatic time adjustment, easy settings, access to approximately 300 world-time cities, Flight Log recording, and Phone Finder. Dual Time displays the time in two cities simultaneously and allows quick swapping between home and local time.
Additional functions include a 1-second stopwatch, 24-hour countdown timer, daily alarm, Super Illuminator LED light, battery-level indicator, Power Saving, and 200-meter water resistance.
- MASTER OF G – AIR GRAVITYMASTER design
- Black aviation-inspired finish
- Wide three-dimensional analog dial
- Carbon Core Guard structure
- Bio-based carbon and resin case
- Bio-based resin band
- Shock Resistant construction
- Tough Solar charging
- Bluetooth® Smartphone Link
- CASIO WATCHES app compatibility
- Automatic time adjustment
- Flight Log recording
- Dual Time display
- Approximately 300 app-based World Time cities
- Super Illuminator LED light
- Battery-level indicator
- Power Saving mode
- 200-meter water resistance
| Specification | Details |
|---|---|
| Brand | Casio |
| Series | G-SHOCK MASTER OF G – AIR |
| Model | GR-B300-1ADR |
| Collection | GRAVITYMASTER GR-B300 Series |
| Color | Black |
| Product Type | Men’s Aviation Watch |
| Display | Analog |
| Movement | Tough Solar Quartz |
| Case & Bezel Material | Bio-Based Carbon / Bio-Based Resin / Stainless Steel |
| Structure | Carbon Core Guard |
| Construction | Shock Resistant |
| Band Material | Bio-Based Resin |
| Glass | Mineral Glass |
| Crown | Screw-Lock Crown |
| Water Resistance | 200 m / 20 Bar |
| Power Supply | Tough Solar |
| Case Size | 59 × 54.7 × 15.7 mm |
| Weight | 71 g |
| Compatible Wrist Size | 145–215 mm |
| Connectivity | Bluetooth |
| Smartphone Link | Mobile Link via Bluetooth |
| Compatible App | CASIO WATCHES |
| Automatic Time Adjustment | Yes |
| Easy Watch Setting | Yes |
| App World Time | Approx. 300 Cities |
| Flight Log | Yes |
| Phone Finder | Yes |
| World Time | Dual Time with Home-City Time Swapping |
| Stopwatch | 1-Second |
| Stopwatch Capacity | Up to 23 Hours, 59 Minutes and 59 Seconds |
| Stopwatch Modes | Elapsed Time and Split Time |
| Countdown Timer | Up to 24 Hours |
| Timer Setting Range | 1 Minute to 24 Hours |
| Alarm | Daily Alarm |
| Light | Super Illuminator LED |
| Afterglow | Yes |
| LED Color | White |
| Neobrite | Yes |
| Battery-Level Indicator | Yes |
| Rotary Function Indicator | Alarm, Stopwatch and Battery Status |
| Power Saving | Yes |
| Battery Operating Time | Approx. 5 Months Without Light Exposure |
| Power-Save Operating Time | Approx. 18 Months After Full Charge |
| Calendar | Full Auto Calendar to 2099 |
| Accuracy | ±15 Seconds per Month Without Mobile Link |
| Analog Timekeeping | 3 Hands and Multiple Inset Indicators |
Additional Information
GENDER: |
Men |
WATCH TYPE: |
Connected / Bluetooth |
BAND MATERIAL: |
Bio-Based Resin |
BAND TYPE: |
Standard Strap |