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.

カシオ Casio 腕時計 G Shock G 7900a 4 メンズ並行輸入品

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

Help Track order

Account Cart

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

Help Track order

Account Cart

₨65635

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

Secure transaction

Description

🔥 Own the moment, anywhere, anytime with G-SHOCK G-7900A-4!

TIDE MOON DATA - Stay synced with nature using real-time tide graphs and moon phase displays.
GLOBAL TIME MASTERY - Instantly access time across 48 cities and 29 time zones—perfect for the globe-trotting professional.
BOLD RED RESIN DESIGN - Stand out with a striking red strap and rugged mineral glass face that blends style with resilience.
SHOCKPROOF DURABILITY - Engineered with G-SHOCK’s legendary shock resistance to keep up with your active lifestyle.
POWERFUL MULTI ALARM SYSTEM - Five customizable alarms including snooze, plus countdown timers to keep your day on track.

The CASIO G-SHOCK G-7900A-4 is a robust, shock-resistant digital watch featuring 20 ATM water resistance, dual stopwatches with 1/100 second accuracy, and world time across 48 cities. It includes tide and moon phase data, five alarms, countdown timers, and a bold red resin strap with mineral glass protection, making it a perfect blend of advanced functionality and standout style for the modern professional.

Specifications

ASIN	B00284ADEE
ASIN	B00284ADEE
Amazon 売れ筋ランキング	ファッション - 56,286位 ( ファッションの売れ筋ランキングを見る ) メンズ腕時計 - 425位
Amazon.co.jp での取り扱い開始日	2009/10/25
GTIN (Global Trade Identification Number)	00079767434205
UPC	079767434205
おすすめ度	4.4 5つ星のうち4.4 (2,657) var
お客様の年齢層	大人
カスタマーレビュー	4.4 5つ星のうち4.4 (2,657) var dpAcrHasRegisteredArcLinkClickAction; P.when('A', 'ready').execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( 'acrLink-click-metrics', 'click', { "allowLinkDefault": true }, function (event) { if (window.ue) { ue.count("acrLinkClickCount", (ue.count("acrLinkClickCount") \|\| 0) + 1); } } ); …
クラスプ（留め金）	バックル
ケース厚	17.7 ミリメートル
ケース形	円形
ケース直径	50 ミリメートル
シリーズ番号	7900
スポーツタイプ	ダイビング
ディスプレイタイプ	デジタル
バンド幅	28.3 ミリメートル
バンド素材	樹脂
バンド色	レッド
パターン	無地
フェイススタイル	モダン
ブランド名	CASIO(カシオ)
ムーブメント	クォーツ
メーカー	CASIO
メーカーにより製造中止になりました	いいえ
メーカー名	CASIO
メーカー型番	G7900A-4
保証期間	保証なし
動力源	バッテリー式
品目部品番号	G7900A-4
商品の重量	44 グラム
商品モデル番号	G7900A-4
型番	G7900A-4
帯域数	1
文字盤カラー	グレー
日常生活用防水	200 メートル
特殊機能	200m防水, カレンダー, タイドグラフ, ムーンデータ, ワールドタイム
製品サイズ	2.54 x 2.54 x 2.54 cm; 44 g
部門	unisex-adult
電池	1 リチウム金属電池(付属)
風防素材	ミネラルガラス

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

₨65635

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

[カシオ]CASIO 腕時計 G-SHOCK G-7900A-4 メンズ [並行輸入品]

Description

Specifications

Common Questions