Stainless Steel Strap Replacement Casio G-SHOCK Series 5121 GW-3000/3500/2000 G-1000 Watch Band Steel Band - AliExpress
Casio, Baby-G, G-SHOCK, 14MM . SMOKE COLOR / Gray, Tanslucent , Silver Tone Buckle, Fits Watch Model # BG-3000-8 , Module # 3136 ( # On back of watchcase in small "box", 750 EJ1 14 Part#10290528 - Walmart.com