Seiko Cal. 4581 - 687

Seiko 4581-687

The 4581-687 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4581 caliber with 27j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-90ac569ec2c9]

Also known as: Monster, Panda

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
44mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
150m
Dial Color
Silver
Jewels
27j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1978

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seikata-wm-90ac569ec2c9