Seiko Cal. 4581 - 631

The 4581-631 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-7281a0906e2b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1986

Related Models

• Seiko 7010-166
• Seiko 7077-421
• Seiko 7149-949
• Seiko 6262-690
• Seiko 6176-760
• Seiko 6284-617
• Seiko 4582-305
• Seiko 4559-389
• Seiko 6181-938
• Seiko 0773-289
• Seiko 6212-305
• Seiko 7086-562