WINDING
THE CHRONOGR APH
Alongside the double-chain structure of the calibre,
and the remarkable accuracy this ensures, the
El Primero 21 movement boasts two other technical
innovations: a new, patented chronograph start/
stop/reset mechanism composed of three heart
pieces, and an exclusive starter mechanism which
ensures reliable operation under all circumstances
and allows the chronograph second, tenths and
hundredths displays to be
simultaneously reset.
The barrel must be wound before the chronograph
is activated. With the watch in your hand, turn the
crown clockwise until the hand of the chronograph
power reserve is fully wound (approximately
25 turns). The barrel that contains the mainspring
has now been wound.
3 8
Summary of Contents for EL PRIMERO series
Page 1: ...OPER ATING INSTRUC TIONS...
Page 4: ...ZENITH THE FUTURE OF SWISS WATCHMAKING SINCE 1865...
Page 10: ...EL PRIMERO...
Page 23: ...ELITE...
Page 31: ...EL PRIMERO 21...
Page 43: ...ZENITH OSCILL ATOR CALIBRE 9100...
Page 49: ...HAUTE HORLOGERIE...
Page 67: ...COMPLICATIONS...
Page 68: ...EL PRIMERO...
Page 81: ...ELITE...