Seiko Cal. 5643 - 670

Seiko 5643-670

The Seiko 5643-670 represents an important milestone in Seiko's 1978 lineup. Powered by the 5643 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-f177def9e63f]

Also known as: Sumo, Sea Horse

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
10.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Silver
Jewels
20j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1978

Related Models

seikata-wm-f177def9e63f