Seiko Cal. 5640 - 809

The Seiko 5640-809 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-5b3e7592e691]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1977

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