Seiko 6105, 6106, 6117, 6118, 6119, 6309, 6319 Compatible Mainspring

Genuine Generale Ressorts high-quality Swiss-made mainspring

If you're servicing a Seiko 61xx or 63xx movement, you want to use a high-quality mainspring from a reputable manufacturer. Why take chances with a no-name mainspring that might cause fitment issues with the arbor or barrel, or which might not provide a strong amplitude? Generale Ressorts, of Switzerland, is the highest-quality maker of aftermarket mainsprings. 

Amplitude Watch Parts ships from the USA, so there's no need to worry about long shipping delays or tariffs. 

Compatible With: Seiko 6105, 6106, 6117, 6118, 6119, 6309, 6319

Manufacturer: Generale Ressorts

Manufacturer Part Number: gr2534x

Replacement for: Seiko 401.615

Type: Automatic

Height: 1.05mm
Thickness: 0.115mm
Length: 420mm
Barrel Diameter: 10.5mm

Compatibility Notes: "I recently used one of these for my Seiko Navigator Timer (6117-6410). The arbor fit was perfect, and it gave me an immediate 40 degree boost in amplitude."--Mike