Seiko Cal. 6645 - 355

The Seiko 6645-355 represents an important milestone in Seiko's 1983 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-40de797ab9de]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1983

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