The high-frequency El Primero 21 1/100th chronograph crafted in a light yet rugged 44mm black ceramic DEFY case with a black rubber strap. Its automatic movement features two independent high-frequency escapements beating at 50Hz for the chronograph function and 5Hz for timekeeping.

Movement
Movement: El Primero
Components: 293
Frequency: 36,000 VpH (5 Hz)
Power reserve: min. 50 hours

Functions
1/100th of a second Chronograph:
- Central chronograph hand that makes one turn each second
- 30-minute counter at 3 o'clock
- 60-second counter at 6 o'clock
- Chronograph power-reserve indication at 12 o'clock
Hours and minutes in the centre
Small seconds at 9 o'clock

Case
Material: Ceramic
Diameter: 44 mm
Water resistance: 10 ATM
Dial: Openworked with two different-coloured counters

Strap
Strap: Black Rubber with black alligator leather coating
Clasp: Titanium double folding clasp with Black DLC coating

Reference
49.9000.9004/78.R582