Seiko Cal. 5691 - 604

The 5691-604 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-a4ac735522c5]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

Related Models

• Seiko 5612-947
• Seiko 4453-973
• Seiko 7197-201
• Seiko 6169-975
• Seiko 6364-152
• Seiko 6278-747
• Seiko 6120-555
• Seiko 0722-979
• Seiko 3857-339
• Seiko 5268-433
• Seiko 3824-729
• Seiko 4546-566