For Casio watch models: for AQ-S810W AQ-S800W SGW-300H SGW-400H SGW-500H MRW-200H AE-1000W AE-1300 AE-1200 W-S200H W-800H W-216H W-735H F-108WH W-215 AEQ-110W. Size: 18mm. Quick release design, free to install and remove the wire strap by hand only.
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