Round carbon case with black analog dial, bio-based resin strap, 59 by 54.7 mm

CASIO

CASIO G-SHOCK GRAVITYMASTER GR-B300-1A watch

SKU CH-J6C3-XW0Q5

A carbon-core solar watch with Bluetooth-linked world time and flight-log functions, 200 m water resistance and a bio-based resin strap

StyleSports
MaterialCarbon
MovementSolar
ShapeRound
Dial ColorBlack
Dial MarkersIndex With Numbers At 12 & 6 O'Clock

Carbon Core Guard case for lightweight strength
Tough Solar charges from any light source
Bluetooth Mobile Link enables automatic time sync
Bio-based resin components reduce environmental impact
200 m water resistance suits professional marine use

209,99 $

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Αποστολή αλλού

Carbon Core Guard structure

The GRB300-1A is a GRAVITYMASTER aviation watch built for pilots and professionals who demand durability. Its Carbon Core Guard case uses carbon fibre-reinforced resin to deliver high strength with low weight. Tough Solar charging and Bluetooth Mobile Link provide automatic time correction and smartphone-based settings control. Water resistance is rated to 200 metres.

Tough Solar power reserve

The solar movement charges from any light source, giving months of operation in darkness after a full charge. Bluetooth connectivity handles world time updates and flight log management without button-heavy menus. The analog display with Neobrite hands and index markers at 12 and 6 o'clock remains legible in low light. The mineral crystal resists everyday scratches.

Bio-based resin construction

Key components including the case, bezel and strap use bio-based resin derived from renewable resources, reducing reliance on fossil plastics. The 59 by 54.7 millimetre case sits securely on a resin band with a buckle clasp. Buyers who need a lighter titanium case or a sapphire crystal should consider other ranges. This model suits those prioritising solar autonomy and cockpit-inspired readability.

Βασικά χαρακτηριστικά

Carbon Core Guard case for lightweight strength
Tough Solar charges from any light source
Bluetooth Mobile Link enables automatic time sync
Bio-based resin components reduce environmental impact
200 m water resistance suits professional marine use

Προδιαγραφές

Brand	CASIO
Style	Sports
Material	Carbon
Movement	Solar
Shape	Round
Dial Color	Black
Dial Markers	Index With Numbers At 12 & 6 O'Clock
Display	Analog
Date	Date
Band Material	Resin
Fastener	Buckle Clasp
Gender	Male
Age	Adult
Condition	New
Bezel	Fixed Bezel
Case Material	Carbon
Case Thickness	54.70 mm
Crystal	Mineral Crystal
Water-Resistant	200m
Special Features	Mineral Crystal,Buckle Clasp,Day and Date Display

Ερωτήσεις για αυτό το προϊόν

Will the carbon core guard structure and 54.7 mm case thickness sit comfortably under the cuff of a standard flight jacket sleeve?

The carbon core guard structure keeps the case lightweight while the 54.7 mm thickness and 59 mm width maintain a low profile that slides easily under most aviation jacket cuffs without snagging.

How do I confirm the tough solar charging and Bluetooth mobile link are active after the initial setup?

Place the watch in bright light; the power indicator will show charge level. Open the G-SHOCK Connected app — a successful pairing displays the current world time and flight log sync status on the phone screen.

Which items are included in the box and what must be purchased separately for full functionality?

The box contains the GR-B300-1A watch with bio-based resin strap, buckle clasp, mineral crystal, and documentation. A compatible smartphone running the G-SHOCK Connected app is required for Bluetooth mobile link features.

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