Seiko Cal. 5646 - 210

The Seiko 5646-210 represents an important milestone in Seiko's 1968 lineup. It features a Cream dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-8ed2472921ab]

Also known as: Tuna, Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1968

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