Seiko Cal. 4445 - 639

The Seiko 4445-639 represents an important milestone in Seiko's 1990 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-debda7bc9834]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1990

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