Seiko Cal. 0770 - 331

The 0770-331 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0770 caliber with 21j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-009e869b934b]

Also known as: Samurai, World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1994

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