Seiko Cal. 6613 - 721

Seiko 6613-721

The 6613-721 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-246def58e161]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
42mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Black
Jewels
25j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1967

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seikata-wm-246def58e161