Seiko Cal. 5640 - 854

Seiko 5640-854

The 5640-854 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5640 caliber with 29j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-a40031eb5c8b]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
8.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Champagne
Jewels
29j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1979

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