Seiko Cal. 5646 - 711

Seiko 5646-711

The Seiko 5646-711 represents an important milestone in Seiko's 1981 lineup. Powered by the 5646 caliber with 26j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-3b49fe5d23d0]

Also known as: Tuna, Arnie

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
13.6mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Silver
Jewels
26j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1981

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