![Seiko 6138 0040 Bullhead Strap Size & Lug Width Seiko 6138 0040 Bullhead Strap Size & Lug Width](https://cdn.strapsco.com/wp-content/uploads/2022/05/Seiko-6138-0040-Bullhead-Strap-Size-Lug-Width.png)
Seiko 6138-0040 “Bullhead” Lug Width & Strap Size
Seiko 6138-0040 “Bullhead” watches have 20mm lugs and are compatible with 20mm watch bands.
Seiko 6138-0040 “Bullhead” case size is 44mm in diameter.
You can shop our entire collection of 20mm watch bands for Seiko 6138-0040 “Bullhead” with the link below. Please select size 20mm to ensure compatibility with your Seiko 6138-0040 “Bullhead”.