Seiko Cal. 6616 - 439

Seiko 6616-439

The 6616-439 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6616 caliber with 29j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-65d95aaa4497]

Also known as: Bullhead

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
11.1mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1975

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