Grand Seiko SBGA387 Lug Width & Strap Size
Grand Seiko SBGA387 watches have 19mm lugs and are compatible with 19mm watch bands.
Grand Seiko SBGA387 case size is 40mm in diameter.
You can shop our entire collection of 19mm watch bands for Grand Seiko SBGA387 with the link below. Please select size 19mm to ensure compatibility with your Grand Seiko SBGA387.