Table of Contents

Ball calibres

by Stephen Foskett (Grail Watch)

Modern Ball Watch Company movements.

Manufacture Movements

Caliber Special features Functions
RRM7309-CChronometer, power reserve 80hAutomatic, hours, minutes, center second, date
RRM7309-CSchronometer with silicon hairspring, power reserve 80hautomatic, hours, minutes, center second, date

Unmodified Movements

Movement Former Name ETA Equivalent Features
RR1103 ETA 2895 Automatic, Hours, minutes, sweep seconds and date
RR1104 2050 Valjoux 7750 Automatic, Hours, minutes, sweep seconds and date
RR1105-C Valjoux 7754 Automatic, Hours, minutes, subsidiary seconds and date
RR1201, RR1201-C 3513 or 651 ETA 2892-A2 Automatic, Hours, minutes, sweep seconds, date and second time zone (GMT)
RR1302 ETA 2893-2 Automatic, Hours, minutes, sweep seconds, date, second time zone (dual time) and power reserve
RR1402, RR1402-C 351 ETA 7750 Automatic, Hours, minutes, subsidiary seconds, day, date and chronograph with accumulated measurement up to 12 hours
RR1404 969 Valjoux 7750 Automatic, Hours, minutes, subsidiary seconds, date and chronograph with accumulated measurement up to 12 hours and second time zone (GMT)
RR1406 3513 ETA 2826 Automatic, Hours, minutes, subsidiary seconds, triple calendar, chronograph with accumulated measurement up to 12 hours, universal military time (UMT) and moon phase
RR1702 293 ETA 2893-2 Automatic, Hours, minutes, sweep seconds, date and power reserve
RR2101 ETA 2671 Manual, Hours, minutes and subsidiary seconds
RR2701 ETA 2671 Manual, Hours, minutes, subsidiary seconds and power reserve

Ball-Modified Movements

Movement Former Name Base Ebauche Features
RR1101, RR1101-C, RR1101-CSL ETA 2892-A2 Automatic, Hours, minutes, sweep second and date
RR1102, RR1102-C, RR1102-CSL ETA 2836-2 Automatic, Hours, minutes, sweep seconds, day and date
RR1106 ETA 2897 Automatic, Hours, minutes, sweep seconds, date and universal military time (UMT)
RR1202-C ETA 2824-2 Automatic, Hours, minutes, sweep seconds, date, second time zone (GMT) and universal military time (UMT)
RR1301 350 ETA 7750 Automatic, Hours, minutes, sweep seconds, big date and second time zone (dual time)
RR1401, RR1401-C, RR1401-SL Valjoux 7750 Automatic, Hours, minutes, subsidiary seconds, date and chronograph with accumulated measurement up to 45 minutes
RR1403 Valjoux 7751 Automatic, Hours, minutes, subsidiary seconds, linear triple calendar and single-button chronograph with accumulated measurement up to 30 minutes
RR1405 352 Valjoux 7750 Automatic, Hours, minutes, subsidiary seconds, linear triple calendar and chronograph with accumulated measurement up to 30 minutes
RR1407 968 ETA 2836-2 Automatic, Hours, minutes, subsidiary seconds, day, date and chronograph with accumulated measurement up to 60 seconds
RR1501, RR1501-C ETA 7001 Automatic, Hours, minutes, sweep seconds, day, date and worldtime
RR1502 ETA 7001 Automatic, Hours, minutes, subsidiary seconds, day, date, worldtime and chronograph with accumulated measurement up to 12 hours
RR1601 ETA 2824-2 Automatic, Hours, minutes, sweep seconds, date and mechanical thermometer (TMT)
RR1701 965 ETA 2836-2 Automatic, Hours, minutes, sweep seconds, big date and power reserve
RR1801 9018 ETA 2892 Automatic, Hours, minutes, sweep seconds, date and moon phase

Old Names

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