Seiko Cal. 5645 - 351

The Seiko 5645-351 represents an important milestone in Seiko's 1980 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-07d219986e1a]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1980

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