In 1966, Seiko introduced their most expensive addition to their already diverse line watch line, the Bell-Matic, more expensive than Seiko’s previous models due to a newly-implemented complication – the novel and unique added mechanical alarm. This 1971 Seiko 4006-7002 Bell-Matic is no exception to this novelty.


The Seiko Bell-Matic, produced from late 1966 to 1978, were made using "4006" automatic movements with 17, 21 or 27 jewels and most featured the day and date. The most outstanding feature on these watches is the mechanical hand-wind alarm. The alarm is wound and set using the crown and engaged using the alarm button. In addition to these functions the crown also serves to set the time and the alarm button can quick-set the date.


INSTRUCTIONS: To use the alarm, pull the crown out to the first position and rotate counter clockwise until the red marker is pointing towards the time you want it to go off. Press the crown in, manually wind, then pull the button at the 2 o’clock position. When the hour hand points to the time, a little bell rings, much like an old fashioned alarm clock. Separately, to set the date, depress the same 2 o’clock button in (much like on the Seiko 6139 helmet) repeatedly until the correct date is reached. Finally, to set the day, pull the crown to the second position and turn the hands to the 1 o’clock position; reverse hands counter clockwise to 9:30 pm and then turn clockwise to 1 am once again – the day will advance, repeat until desired day of the week is reached.


This Bell Matic comes with a leather strap, NATO strap, springbar tool, and Pelican travel case.

1972 Seiko Bell Matic 4006-7004 Alarm Automatic

  • DIAL: Original blackish/gray dial shimmers, lume also shines.  Day/date at 3 o’clock position works nicely (see atypical setting instructions above). Original hour, minute, and second hands; inner alarm ring rotates as designed.


    CASE: Original 38mm (w/o crown, 39.5mm with) x 43mm gold case.  Of note, no "rot" anywhere on the case, usually seen from being in tropical climates.


    CRYSTAL: Original crystal is scratch-free.


    BAND: This Bell Matic comes with a leather strap - with gold hardware - and a separate green NATO strap; both are great compliments to the classic vintage nature of this Bell Matic.


    MOVEMENT: This 4006 automatic movement was manufactured in February 1972.  Mechanical alarm functions well, and rings loudly, as designed.


    CROWN: Original unsigned gold crown.

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