Seiko Cal. 6686 - 437

Released in 1975, the Cal. 6686 with design code 437 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-830e6ddf00b6]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

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