Seiko Cal. 5677 - 645

The Seiko 5677-645 represents an important milestone in Seiko's 1999 lineup. Powered by the 5677 caliber with 23j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-ae3630df9be5]

Also known as: Navigator, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1999

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