what is the purpose of blue tooth if it's not a smart watch?

THE WATCH SYNCS WITH YOUR SMART PHONE. WHEN CONNECTED YOUR WATCH WILL ALWAYS HAVE THE EXACT CORRECT TIME. YOU CAN ALSO CHAGE THE SETTINGS ON A CONNECTED PHONE. I HAVE SEVERAL WATCHES CONNECTED TO THIS APP. THIS FEATURE REPLACES ATOMIC TIME KEEPING WHICH WORKED WELL BUT ONLY CONNECTED AT NIGHT TO UPDATE THE TIME.

Is the dial at least sapphire glass for that crazy price?

Mineral Chrystal it’s noted in the description

Are you a authorized casio dealer?

Hello, We are official authorized dealer for Casio G-SHOCK. I don't know about the other sellers though. Best regards, GTJ

Does watch have day and date?

Nice watch but, does not have a day of the week. It does have the month and day: 3 20 (March 20th.

Gstb400 1a | Desertcart Netherlands

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€ 1018.18

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Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your wrist game with the thinnest, toughest G-Steel ever.

BUILT TO ENDURE - Carbon Core Guard structure delivers top-tier shock resistance for your active lifestyle.
EFFORTLESS CONTROL - Large stainless steel buttons with minimal guards for smooth, stylish operation.
SLIMMEST G STEEL YET - At just 12.9mm thick, it’s the ultimate sleek statement on your wrist.
POWER MEETS PRECISION - Tough Solar technology ensures you’re always charged without the hassle.
SEAMLESS CONNECTIVITY - Bluetooth linking keeps your watch synced and your schedule on point.

The Casio G-Shock GSTB400-1A redefines rugged elegance with its ultra-thin 12.9mm carbon core guard design, solar-powered battery, and Bluetooth connectivity. Engineered for professionals who demand durability and style, it offers 200-meter water resistance, shock resistance, and a sophisticated analog-digital display with world time and LED illumination.

Specifications

ASIN	B092BVGQ1S
Age Range Description	Adult
Band Colour	Black
Band Material	Stainless Steel
Band Style1 - Band Style5	G-Steel
Band Width	28.2 Millimetres
Brand	G-Shock
Case Diameter	12.9 Millimetres
Case Material1 - Case Material2	Metal
Case Shape	Round
Case Thickness	12.9 Millimetres
Character	fashion
Clasp Type	Buckle
Closure Type	Buckle
Country of Origin	China
Crystal Material	mineral
Customer Reviews	4.6 out of 5 stars 95 Reviews
Dial Colour	Black
Display Type	Analog-Digital
Embellishment Feature	Crystal
Face Style	Sporty
Item Type Name	Sport Watch
Item Weight	0.5 Pounds
Manufacturer	G-Shock
Model Name	G-Steel
Model Number	GSTB400-1A
Movement Type	Japanese Quartz
Part Number	GSTB400-1A
Power Source Type	Solar Powered
Series Number	400
Special Feature(s)1 - Special Feature(s)3	Shock Resistant, World Time, dual-Time-display, light, stop-watch
Sport1 - Sport3	Multi-Sport
Strap Type	Bracelet
UPC	889232303574
Unit Count	1 Count
Water Resistance Depth	200 Metres
Water Resistance Level	Water Resistant

Reviews

H**.

CasioGSTB4001A

27.02.2026

A**N

Terrible, awful app

10.09.2023

J**A

Excelente g-shock

Es un poco más pequeño de lo que se ve en foto, pero aún así es muy bonito el reloj, es brillante el acabado y se ve genial en tu mano, muy recomendable.

14.02.2023

P**.

My new watch

6.03.2026

A**O

Casio GST-B400 - Original e Novo

Estou muito feliz com o relógio, é original Casio e novo. Fiquei com medo de não chegar até mim, no Brasil, devida a burocracia, mas graças a Deus deu tudo certo. Recomendo a todos.

17.02.2026

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