Seiko Cal. 0777 - 637

Seiko 0777-637

The 0777-637 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0777 caliber with 20j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-2fa098057b8e]

Also known as: Turtle, Goldfeather

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
12.4mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1994

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