Seiko Cal. 6685 - 551

Released in 1966, the Cal. 6685 with design code 551 was part of Seiko's domestic market collection. It features a White dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-eb6355ef0879]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1966

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