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Seiko 4206B

 

Seiko 4206BSeiko 4206B

Description

The last Seiko ladies' selfwinding movement is the caliber 4206(B). It measures a little less than 8 lignes in diameter, has got a ball beared quarter-arc rotor and can be handwound.

The enormous amount of functions is astonishing: It does not only display the hours, minutes and seconds, but also the date and bilingual weekday. Both can be quickset in the middle crown position.

The Seiko 4206B has got seventeen jewels, an excenter winding mechanism and a Glucydur balance, which is secured in two inhouse Diashock absorbers.

Seiko 4206B dial sideSeiko 4206B dial side

 

 

 Technical data

ManufacturerSeiko
Caliber4206B
Number of jewels17
EscapementAnchor with pallets
BalanceGlucydur
Shock protection(s)Diashock (Seiko)
Balance cock directionclockwise
Hairspring studmoveable
Regulator typeHairspring key
FeaturesSC?,QG,JG,RDR,AUT
FunctionsHour, minute, second, day, weekday, selfwinding
Beats per hour21600
Size73/4'''
Image in Flume Werksucher 0
Seiko 4206BSeikoSeiko4206B7 3/4''''''Seiko 4206B17 Jewels, 7 3/4'''''', 21600 A/h, SC?,QG,JG,RDR,AUT
Factsheet

 

 

Usage gallery

Seiko Automatic ladies' watch model 0420Seiko Automatic ladies' watch model 0420