Seiko Cal. 6313 - 555

Seiko 6313-555

The 6313-555 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6313 caliber with 34j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-a1d72cf25e59]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
39mm
Case Thickness
12.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Green
Jewels
34j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1978

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