I see case diameter in description is 45 millimeters, but in overview section is 51.5mm. Which is correct ?

The 51.5mm measurement includes the sensor and crown, measured across from 9:00 to 3:00. Without crown, sensor, or buttons, it measures about 45mm (I don’t have calipers, but it’s pretty close to 45).

Help! i need to know the right size to put a nato strap on it. thanks!!

The original straps are 23mm wide. The lug width is 24mm. Hope that helps

Is the band's photoflorescence a coating, or infiltrated into the band itself. Will bleach damage it (swimming pool)?

It is infiltrated into the band itself. Soft rubber seems impermeable to tap water but don't know if it will be attacked by higher chlorine concentration of a swimming pool.

Casio メンズ Pro Trek ソーラーパワーシリコンウォッチカラーブラックモデル Prg

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

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Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌌 Own the night with style and precision — the ultimate Pro Trek companion.

DURA SOFT SILICONE BAND - Experience all-day comfort and durability with a soft, glow-in-the-dark band designed for active lifestyles.
SOLAR POWERED ENDURANCE - Harness the sun’s energy for reliable, eco-friendly power that keeps you going on every adventure.
TRIPLE SENSOR PRECISION - Navigate with confidence using built-in compass, altimeter, and barometer for real-time outdoor insights.
RUGGED 200 M WATER RESISTANCE - Dive into any challenge—this watch is built to withstand water, shocks, and the toughest environments.
NIGHT READY NEON ILLUMINATION - Stay effortlessly visible with vibrant neon green and purple lighting—never miss a beat after dark.

The Casio PRO TREK PRG-650Y-1CR is a solar-powered, triple sensor outdoor watch designed for night-time adventures. Featuring a durable DURA-SOFT silicone band with glow-in-the-dark accents, neon illuminator for easy readability in darkness, and 200m water resistance, it combines rugged functionality with sleek, stealthy aesthetics perfect for professionals who demand both style and performance.

Specifications

ASIN	B075YP2RCV
ASIN	B075YP2RCV
Amazon.co.jp での取り扱い開始日	2017/10/25
GTIN (Global Trade Identification Number)	00889232168708
UPC	889232168708
おすすめ度	4.7 5つ星のうち4.7 (972) var
お客様の年齢層	大人
カスタマーレビュー	4.7 5つ星のうち4.7 (972) 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	12.2 ミリメートル
ケース形	円形
ケース直径	50 ミリメートル
ケース素材	樹脂
シリーズ番号	650
スタイル名	ベルトタイプ
ディスプレイタイプ	デジタル
バンド幅	23 ミリメートル
バンド素材	シリコーン
バンド色	ブラック
バンド長	9.5 インチ
パターン	無地
パック数	1
ブランド名	CASIO(カシオ)
ベゼルの色	ブラック
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	PRG-650Y-1CR
モデルシリーズ	PRG650
ユニット数	1.00 個
動力源	バッテリー式
同梱コンポーネント	腕時計。
商品の入り数	1
商品の重量	0.1 キログラム
商品モデル番号	PRG-650Y-1
商品種別	時計
型番	PRG-650Y-1
帯域数	1
文字盤カラー	ブラック
日常生活用防水	200 メートル
特殊機能	耐衝撃
発売日	2017/10/9
製品サイズ	2.54 x 2.54 x 2.54 cm; 100 g
部門	ユニ-アダルト
電池	1 CR2規格電池(付属)
風防素材	プラスチック

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