Seiko Cal. 6335 - 631

Seiko 6335-631

The 6335-631 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6335 caliber with 28j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-f42a7bb0bc50]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
9.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
120m
Dial Color
Cream
Jewels
28j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1993

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