Seiko Cal. 6689 - 361

Seiko 6689-361

The Seiko 6689-361 represents an important milestone in Seiko's 1968 lineup. Powered by the 6689 caliber with 22j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-1467eaf46838]

Also known as: Tuna, Silverwave

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
44mm
Case Thickness
8.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Silver
Jewels
22j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1968

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