Seiko 4S27 Movement Details

Seiko caliber 4S27 is an automatic (with hand winding) watch movement. Production started around 2003 and production finished in 2007.
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Sub-brands: Brightz
Power reserve:50 hours
Accuracy:+25/-15 seconds/day (Seiko "C" standard)
Day / date?Day + date
GMT / world time?No
Rate:28,800 bph
Number of jewels:28
Notes:Has a retrograde day display. The same as cal. 4S27 but without the higher grade finishing.
PDF guides:
Related movements: 4S77

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