CASIO G-SHOCK GR-B300-1A4DR MASTER OF G ANALOG-DIGITAL BLACK WATCH

Aviation-grade performance meets legendary G-Shock toughness in the Casio GR-B300-1A4DR Gravitymaster.

This Master of G timepiece brings cockpit-inspired functionality with professional aviation features to your wrist. Engineered for pilots and aviation professionals, the carbon core guard structure with bio-based resin case delivers superior strength and durability for demanding environments. Powered by Tough Solar technology, you'll never change a battery—light keeps it running indefinitely. Bluetooth connectivity syncs with your smartphone for automatic time updates and flight log management, while the dual-time analog-digital display provides instant access to multiple time zones.

Key Features:
• Tough Solar power - never change a battery, powered by light
• Bluetooth smartphone link - auto time sync, flight log management
• Carbon Core Guard structure - superior shock resistance
• Bio-based resin case - sustainable, durable construction
• Flight log memory - track your aviation activities
• World time - over 300 cities coverage
• Dual-time display - analog and digital for multiple time zones
• 200m water resistance - professional-grade protection
• Super Illuminator LED - excellent cockpit visibility
• Rotary disc battery indicator - monitor power at a glance
• Stopwatch, countdown timer, alarms
• Full auto calendar - pre-programmed to 2099

Why Choose the Gravitymaster:
The GR-B300-1A4DR combines G-Shock's legendary toughness with professional aviation functionality. The flight log memory lets you track takeoff and landing times, while world time for over 300 cities ensures you're always on schedule across time zones—perfect for pilots, aviation professionals, and frequent travelers.

The carbon core guard structure delivers exceptional shock resistance while the bio-based resin case provides sustainable durability. Tough Solar power means you'll never worry about battery changes, and Bluetooth connectivity keeps you synced with automatic time updates. The Super Illuminator LED ensures excellent visibility in cockpit conditions.

Perfect for aviation professionals, pilots, frequent travelers, and anyone who demands professional flight functionality, solar power, Bluetooth connectivity, and cockpit-inspired G-Shock toughness.