Casio 71604130 Genuine Factory Replacement Resin Band fits CA-53W-1 CA-61W-1 FT-100W-1 W-520U-1 W-720-1 W-720G-9 Casio Part Number 71604130 Fits Model Number: CA-53W-1, CA-61W-1, FT-100W-1, W-520U-1, W-720-1, W-720G-9 Band Color: Black Loop: Black Rubber Loop / Buckle: Black Plastic Buckle Band Width: 24.5mm (Outside Lug), 20mm (Inside Lug)