how big is this watch, i.e. how many millimeters?

52mm diameter Case Thickness 17 millimeters

I know the dimensions, but does it appear "too big" for an 11-year old boy's wrist? He's athletic and we want to get him a watch for his birthday.

The G7900, while fairly large, has wings under the strap that make it fit nicely on smaller wrists. This means that it will likely fit better on a smaller wrist than similarly-sized G-Shocks that don't have the wings under the strap.I bought a G7900A-4 for my nephew recently. I was so impressed with the styling and the bright red color that I ended up buying another one for myself. Of all the watches I have -- and I have more than I need -- this one attracts the most attention. People who don't even notice my other watches definitely notice this one. The bright red color is hard to ignore.I think an 11-year old would be thrilled to get this watch, and will likely be the envy of his friends.

is there a smaller size?

We at us legend inc would like to thank you for your email.We believe the Casio g shock G7900 series comes one size only (large)We would like to thank you for shopping on Amazon.Us legend inc customer service

Is this a legit casio g-shock? or is it like a replica? i gotta make sure i'm not buying the replica one, i don't want to make that mistake again.

There are certain specific markings on a watch manufactured by Casio. However to be one hundred percent sure that you did purchase a Casio product you would have to mail it in to Casio’s factory service center in order to confirm that the watch was manufactured by Casio.

Mens G7900a 4 G Shock Rescue Red Digital Sport Watch

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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R4167

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Rescue Red Ready: Time to Own Every Moment ⏱️

ALL DAY ALERTS - Five multi-function alarms plus flash alert keep your schedule sharp and on point.
BUILT FOR EXTREMES - Shock-resistant & low-temp LCD (-20°C) keeps you on time no matter the adventure.
INSTANT VISIBILITY - Auto EL backlight with afterglow and large buttons for quick, easy access anytime, anywhere.
GLOBAL TIME MASTERY - World Time with 29 time zones and daylight saving on/off—never miss a meeting or call.
MARINE GRADE DURABILITY - Water resistant to 200m—perfect for professional marine activity and surface water sports.

The Casio G-Shock Rescue Red G7900A-4 is a rugged digital sport watch engineered for professionals and adventurers alike. Featuring shock resistance, a low-temperature LCD, and 200m water resistance, it delivers reliable performance in extreme conditions. With moon and tide graphs, world time across 29 zones, five alarms, stopwatch, and countdown timer, this watch blends advanced functionality with bold style. Its durable red resin case and band, combined with an auto EL backlight and large buttons, ensure visibility and ease of use on land or sea.

Specifications

ASIN	B00284ADEE
Additional Features	Alarm, Chronograph, Shock Resistant
Age Range Description	Adult
Band Color	Red
Band Material Type	Resin
Band Width	28.3 Millimeters
Bands	1
Best Sellers Rank	#364,418 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,613 in Men's Wrist Watches
Brand Name	Casio
Case Diameter	50 Millimeters
Case Material Type	Resin
Case Thickness	17.7 Millimeters
Clasp Type	Buckle
Closure Type	Buckle
Crystal	mineral
Customer Reviews	4.8 out of 5 stars 2,755 Reviews
Dial Color	Red
Display	Digital
Embellishment Feature	Crystal
Face Style	Digital
Global Trade Identification Number	00079767434205
Included Components	Wristwatches
Item Part Number	G7900A-4
Item Type Name	Watch
Item Weight	44 Grams
Manufacturer	Casio
Manufacturer Part Number	G7900A-4
Material	Blend
Model Name	G7900A-4
Model Number	G7900A-4
Power Source	Battery Powered
Series Number	7900
Shape	Round
Sport Type	Multi-Sport, Snowboarding
Strap Type	Two Piece Strap
Style Name	Sport
Theme	Nautical
UPC	079767434205
Unit Count	1 Count
Warranty Type	No Warranty
Watch Movement Type	Quartz
Water Resistance Depth	660 Feet
Water Resistance Level	Water Resistant

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