Seiko Cal. 5640 - 609

The 5640-609 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5640 caliber with 35j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-b3d58e4c624c]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1989

Related Models

• Seiko 6136-362
• Seiko 6147-118
• Seiko 7142-415
• Seiko 6126-339
• Seiko 7019-970
• Seiko 5628-628
• Seiko 4493-476
• Seiko 6379-183
• Seiko 6235-628
• Seiko 0790-128
• Seiko 6385-126
• Seiko 6678-685