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.

CASE

MATERIAL: Steel 

DIAMETER: 39.5 mm

WATER RESISTANCE: 10 ATM

DIAL: Silver matte with two different-coloured counters & an Hesalite counter

MOVEMENT

MOVEMENT: El Primero

COMPONENTS: 269

FREQUENCY: 36,000 VpH (5Hz)

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 S
• mall seconds at 9 o'clock

STRAP

KIND: Metal Bracelet