Seiko Cal. 0770 - 307

Seiko 0770-307

The 0770-307 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-652bbc6bfc07]

Also known as: World Timer, Baby Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
8.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1994

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