Seiko Cal. 4491 - 770

The Seiko 4491-770 represents an important milestone in Seiko's 1976 lineup. Powered by the 4491 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-67629afdc771]

Also known as: Silverwave, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1976

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