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GWN-1000B-1BJF Casio G-Shock
Casio GWN-1000B-1BER / GWN1000B-1B Gulfmaster Blue
G-Shock Gulfmaster GWN1000B-1B and GWN1000-9A | AZ Fine Time Blog
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Watch Casio G-SHOCK GWN-1000B-1B – original men's quartz wristwatch with an official guarantee Watches Wristwatches time style classic timer stopwatch design - AliExpress
User manual Casio G-Shock GWN-1000B-1BER (English - 15 pages)