Seiko Cal. 3893 - 645

Seiko 3893-645

The Seiko 3893-645 represents an important milestone in Seiko's 1980 lineup. Powered by the 3893 caliber with 18j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-786df776c3c8]

Also known as: Helmet, UFO

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
40mm
Case Thickness
14.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1980

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