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beirutcart.com is an authorised online retailer operating 3 branches across Lebanon — Zalqa, Beirut Salim Salam, and Centro Mall.
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Casio G-SHOCK GRAVITYMASTER Bluetooth Solar Men Watch - Grey & Blue | GR-B300-8A2DR combines aviation-inspired styling with a wide three-dimensional dial for improved readability. It features Tough Solar charging, Bluetooth® Smartphone Link, Carbon Core Guard construction, dual time, Flight Log recording, and 200-meter water resistance.
Casio G-SHOCK GRAVITYMASTER Bluetooth Solar Men Watch - Grey & Blue | GR-B300-8A2DR is part of the MASTER OF G – AIR collection, designed for aviation enthusiasts and users who need reliable performance in demanding environments. Its grey exterior, blue detailing, large dimensional indexes, and aircraft-instrument-inspired inset dials provide a technical and highly readable appearance.
The watch features a Carbon Core Guard structure made from bio-based carbon and bio-based resin, delivering shock resistance, rigidity, and corrosion resistance while maintaining a lightweight 71 g construction. Its seamless case-and-band design offers a secure and comfortable fit, while the metal bezel adds durability and visual depth.
Tough Solar technology converts natural and artificial light into power. Bluetooth® connectivity links the watch to the CASIO WATCHES app for automatic time adjustment, easy settings, approximately 300 world-time cities, Flight Log recording, and Phone Finder. Dual Time simultaneously displays the time in two locations, making the watch especially useful for travel.
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. The rotary disc indicator at the 9 o’clock position displays stopwatch status, alarm status, and remaining battery level.
| Specification | Details |
|---|---|
| Brand | Casio |
| Series | G-SHOCK MASTER OF G – AIR |
| Model | GR-B300-8A2DR |
| Collection | GRAVITYMASTER GR-B300 Series |
| Color | Grey / Blue / 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 |
| 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 |
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