Seiko Cal. 6690 - 261

Released in 1980, the Cal. 6690 with design code 261 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-268c2867d41e]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1980

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