Automatic El Primero chronograph El Primero Calibre 400 B: 326 components, 31 jewels and 36,000 VpH, Date indication at 6 o'clock .

 Chronograph:
- Central chronograph hand
- 12-hour counter at 6 o'clock
- 30-minute counter at 3 o'clock

Hours and minutes in the centre
Small seconds at 9 o'clock
Tachymetric scale
Date indication at 6 o'clock
 

MOVEMENT	El Primero
COMPONENTS	326
FREQUENCY	36,000 VpH (5 Hz)
POWER RESERVE	min. 50 hours
MATERIAL	Steel
DIAMETER	42 mm
WATER RESISTANCE	10 ATM
DIAL	Silver-toned sunray-patterned dial with three different-coloured counters

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