Seiko Cal. 6277 - 637

Seiko 6277-637

The 6277-637 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6277 caliber with 28j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-455e174f34fb]

Also known as: Panda, Sportsmatic

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
8.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
200m
Dial Color
Silver
Jewels
28j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1968

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