Seiko Cal. 5649 - 311

Released in 1971, the Cal. 5649 with design code 311 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-c777ee44ca2f]

Also known as: Tuna, World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1971

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