brand Historical Collection - 2025

G-Shock Gravitymaster GR-B300RY-1A9ER Gravitymaster - Rescue Yellow Watch

This product belongs to the historical collection of G-Shock. It is no longer available / for sale.

Specifications

Alternative article number	GR-B300RY-1A9
Ean	4549526397943
Diameter	54.7 mm
Water Resistant	20 Bar (Dive)
Warranty	2 Year Warranty Free 1 year extra warranty on Watch.co.uk

Functions

Time	hours - Analogue hand
Calendar	Date - Window
Chronograph and timers	Stopwatch /Chronograph - 1/1 seconds, 24 hours - Elapsed time - Split times
Alarms and notifications	Sound Alarm(s) - 1 Daily alarm

General information

Ean	4549526397943
Brand	G-Shock
Series	Gravitymaster
Name	Gravitymaster - Rescue Yellow
Year	2025 Spring / Summer
Display Type	analog
Swiss Made	No
Water Resistant	20 Bar (Dive)
Dial colour	Dark grey
Hand colors (h-m-s)	Grey, Grey, White

Case information

Case code	GR-B300RY
Diameter	54.7 mm
Case Thickness	15.7 mm
Material	Carbon reinforced resin
Case Shape	Round
Case colour	Black
Back case material	Stainless steel
Back Case	Closed with screws
Material crystal	Mineral
Crown	Screw crown

Movement information

Movement part nr.

5719 ( See specifications )

Download manual (English)

Movement Brand	Casio
Swiss movement	No
Display Type	analog
Mechanism	Solar Quartz
Battery	Rechargable solar battery
Battery life	5 months
Hackable	No
Skeletonized	No

Strap information

Strap material	Bio-sourced resin
Strap width	28 mm
Lug width	17 mm
Strap width at the clasp	21 mm
Strap colour	Yellow
Clasp Type	Buckle
Clasp colour	Black
Custom sizing?	No
Mount type	Saddle screw
Straight strap mount	No
Suitable for wrist size	145 mm - 215 mm
Original strap	Strap G-Shock 10685357

Time

hours	Analogue hand
minutes	Analogue hand
Seconds	Analogue hand
Time Zones	Home city setting, Multiple time zones, Dual time / GMT, World time (smartphone link)
Automatische aanpassing van de tijd	Smartphone sync
DST-setting	Automatic (smartphone link)

Calendar

Chronograph and timers

Stopwatch /Chronograph	1/1 seconds, 24 hours, Elapsed time, Split times
Timer(s)	Countdown Timer 1/1 seconds - 24 hours

Alarms and notifications

Sound Alarm(s)	1 Daily alarm
Battery alert	Low battery alert

Aviation

Flight Log

Lighting

LED lighting

Casio Super Illuminator

Other

Hand alignment correction	Via smartphone link
Find my phone
Power save mode

Connectivity

Bluetooth

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