Seiko Cal. 4531 - 631

The 4531-631 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4531 caliber with 19j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-988ed0cf104a]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1966

Related Models

• Seiko 6147-952
• Seiko 5632-782
• Seiko 4522-554
• Seiko 4573-952
• Seiko 3810-990
• Seiko 7185-382
• Seiko 3814-878
• Seiko 7138-115
• Seiko 5656-294
• Seiko 6193-528
• Seiko 6620-845
• Seiko 4443-845