Seiko SRP637 “Baby Tuna” Lug Width & Strap Size

Seiko SRP637 “Baby Tuna” watches have 22mm lugs and are compatible with 22mm watch bands.

Seiko SRP637 “Baby Tuna” case size is 46.5mm in diameter.

You can shop our entire collection of 22mm watch bands for Seiko SRP637 “Baby Tuna” with the link below. Please select size 22mm to ensure compatibility with your Seiko SRP637 “Baby Tuna”.