Is there a international warranty card? Thx.

WARRANTY CARD IS VALID ONLY FOR SERVICE IN THE COUNTRY OF PURCHASE.

What exactly does the app do for the watch besides set the time?

The app primarily syncs the time to your phone but also offers a secondary time zone for travelers as well as alarm and timer but obviously your phone already has those features. The only other thing the app has is the guide that is the instructions for use document. So essentially you are correct, the app mostly is making sure time is exact by syncing with your phone but even so you have to push the red button to update it for daylight saving time changes.

What does “Battery life: 5 months” means?

This is a solar power watch, if left in a drawer for example it should have power reserve lasting that long without exposure to light

Mens G Steel By G Shock Quartz Solar Bluetooth Connected

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

⌚ Elevate your wrist game with the ultimate blend of tech and toughness!

POWER THAT LASTS - Tough Solar charging with battery level indicator—never worry about running out.
UNMATCHED DURABILITY - Shock-resistant G-Shock build keeps you unstoppable.
SLEEK YET RUGGED DESIGN - Layer guard structure with resin cushioning for a bold, comfortable wrist presence.
EFFORTLESS GLOBAL TIMEKEEPING - Dual world time dial + Bluetooth sync means you're always on time, anywhere.
ADVANCED CHRONOGRAPH PRECISION - Analog chronograph with jet-engine inspired rotating disk for dynamic style and function.

The Casio G-Steel GST-B100-1ACR is a solar-powered, Bluetooth-connected analog chronograph watch featuring a shock-resistant layered guard structure, 200-meter water resistance, and dual world time dials. Designed for professionals who demand precision and durability, it offers smartphone link functionality for automatic time updates, a battery level indicator, and a stylish black resin band with stainless steel buckle.

Specifications

ASIN	B075JH5495
ASIN	B075JH5495
Additional Features	Bluetooth Connectivity
Age Range Description	Adult
Band Color	Black
Band Length	10.75 Inches
Band Material Type	Rubber
Band Width	22.6 Millimeters
Bands	1
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	#420,052 in Fashion ( See Top 100 in Fashion ) #9,699 in Men's Wrist Watches
Brand Name	Casio
Case Diameter	53.8 Millimeters
Case Material Type	Stainless Steel
Case Thickness	14.1 Millimeters
Character	Fashion
Clasp Type	Buckle
Closure Type	Buckle
Crystal	mineral
Customer Reviews	4.7 4.7 out of 5 stars (544)
Customer reviews	4.7 4.7 out of 5 stars (544)
Date First Available	16 October 2017
Department	mens
Dial Color	Noir
Display	Analog-Digital
Embellishment Feature	Crystal
Face Style	Chronograph
Included Components	Watch & Resin Strap with Stainless Steel Buckle
Is Discontinued By Manufacturer	No
Item Type Name	Watch
Item Weight	0.22 Pounds
Item model number	GST-B100-1ACR
Manufacturer	Casio G Shock
Manufacturer	Casio G Shock
Manufacturer Part Number	GST-B100-1ACR
Model Name	G-Steel
Model Number	GST-B100-1ACR
Pattern	Solid
Power Source	Food
Product Dimensions	2.54 x 2.54 x 2.54 cm; 100.7 g
Shape	Round
Sport Type	Swimming
Strap Type	Two Piece Strap
Style Name	Watches
Theme	Sports
UPC	889232168159
Watch Movement Type	Quartz
Water Resistance Depth	200 Meters
Water Resistance Level	Waterproof

Reviews

Y**S

Realmente soy fiel a Casio de toda la vida y cada reloj que he arquirido con los años me ha solprendido el diseño la tecnología pero con este hermoso reloj me ha solprendido lo increíble y exacto que es su diseño unico y practico para cualquier activida sea para trabajar o salir de gala luce Realmente genial. Lo recomiendo a todos I am really faithful to Casio for life, and every watch I have purchased over the years has given me the design, technology, but with this beautiful watch I have been surprised by how incredible and accurate its unique and practical design is for any activity, whether it is to work or to leave the gala, it looks really great. I recommend it to everyone.

18.12.2025

F**Z

This is an amazing watch. I have liked Casio always but I haven't had one since I was a child (25 years ago). It is the best because of the G-Shock, solar power and the bluetooth connection, that makes it a really special one. It is bigger than I expected, but now I like that it is big. It is light and good looking. I have recieved great compliments, but what I really care about is that I can wear it at work, where I have to use my arms a lot and I'm not scared of breaking my Casio because I know it is resistent to any condition. I really like it.

3.01.2019

M**Z

es un producto original y viene en las mejores condiciones.

17.03.2026

A**L

Si duda es uno de los mejores reloj que tengo en mi colección es hermoso grande y llama mucho la atención sin duda ! Lo recomiendo al 100 no te vas a arrepentir!

26.12.2025

D**Z

This watch is beautiful. It has the ideal size, the solar battery works great, and due to that no battery replacement is required. Definitely worth buying. I used in my casual and active days, very versatile

28.03.2026

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Men's 'G-Steel by G-Shock' Quartz Solar Bluetooth Connected Resin Dress Watch, Color: Black (Model: GST-B100-1ACR)

Description

Specifications

Reviews

Common Questions