Seiko Cal. 5646 - 561

The Seiko 5646-561 represents an important milestone in Seiko's 1965 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-72216f611a7a]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1965

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