Seiko Cal. 4587 - 661

Seiko 4587-661

The 4587-661 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4587 caliber with 22j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-e26ce5b1ad0e]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
9.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1991

Related Models

seikata-wm-e26ce5b1ad0e