Seiko Cal. 6645 - 428

Seiko 6645-428

The Seiko 6645-428 represents an important milestone in Seiko's 1979 lineup. Powered by the 6645 caliber with 18j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-ca29a19a36f6]

Also known as: Golden Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Black
Jewels
18j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1979

Related Models

seikata-wm-ca29a19a36f6