Seiko 6R21 Movement Details

Seiko caliber 6R21 is an automatic (with hand winding) watch movement.

Sub-brands: Ananta, Presage
Power reserve:45 hours
Accuracy:+25/-15 seconds/day (Seiko "C" standard)
Day / date?Day + date
GMT / world time?No
Chronograph?No
Hacking?Yes
Rate:28,800 bph
Number of jewels:29
Lift angle:52º
Size / diameter:27.4mm
Height:6.15mm
Stem code: 351200 (tap 10)
Balance wheel code: 310048
Mainspring code: 201074
Notes:Has a power reserve indicator.
PDF guides: Technical guide for 6R20A & 6R21A
Related movements: 6R15 6R20