Seiko Cal. 5640 - 659

Seiko 5640-659

The 5640-659 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5640 caliber with 36j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-7ec1b86118ab]

Also known as: Bellmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
11.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Cream
Jewels
36j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1988

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