Zenith Chronomaster Open – 39.5 mm

Reference Number
03.3300.3604/69.M3300

The CHRONOMASTER Open offers a view of the beating heart of the El Primero movement from the dial. Crafted in a sleek 39.5mm steel case, this version features a matte silver dial with tricolour counters and a transparent counter for the running seconds, paired with an integrated steel bracelet. Powered by the El Primero 3604 1/10th of a second automatic chronograph movement.

TECHNICAL SPECIFICATIONS

MOVEMENT
MOVEMENT: El Primero
COMPONENTS: 269
FREQUENCY: 36,000 VpH (5 Hz)
POWER RESERVE approx. 60 hours

FUNCTIONS
1/10th of a second Chronograph:
– Central chronograph hand that makes one turn in 10 seconds
– 60-minute counter at 6 o’clock
– 60-second counter at 3 o’clock
Hours and minutes in the centre
Small seconds at 9 o’clock

CASE
MATERIAL: Steel
DIAMETER: 39.5 mm
WATER RESISTANCE: 10 ATM
DIAL: Silver matte with two different-coloured counters & an Hesalite counter