Seiko Cal. 6633 - 157

The Seiko 6633-157 represents an important milestone in Seiko's 1976 lineup. Powered by the 6633 caliber with 19j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-29d512f4186b]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1976

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