Seiko Cal. 5642 - 767

Seiko 5642-767

The Seiko 5642-767 represents an important milestone in Seiko's 1982 lineup. Powered by the 5642 caliber with 17j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-715fb397f290]

Also known as: Sumo, Helmet

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
34mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Green
Jewels
17j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1982

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