Seiko Cal. 6613 - 337

Seiko 6613-337

The 6613-337 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6613 caliber with 25j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-76e319f23949]

Also known as: Turtle, Sportsmatic

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
10.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Green
Jewels
25j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1983

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