Seiko Cal. 6630 - 540

The 6630-540 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-f7b4086f91b3]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1967

Related Models

• Seiko 7058-422
• Seiko 4587-537
• Seiko 6648-208
• Seiko 4578-364
• Seiko 4481-799
• Seiko 3860-112
• Seiko 5274-510
• Seiko 7091-395
• Seiko 6128-738
• Seiko 3810-762
• Seiko 7168-486
• Seiko 5642-383