Jaeger LeCoultre cal 754

JLC cal 754
In house caliber
Automatic winding, 28.800 vph, power reserve 65 (2 barrel), column wheel chronograph with vertical coupling
Function: hour, minute, chronograh, 2nd time zone, date
Thickness: 6.27 mm
Balance spring: flat hairspring

Patek Philipe cal 25-21 REC

Manual winding, 28.800 vph, 18 jewels, 44 hours power reserve, Geneva Seal
Functions: Hour, minute, subsidiary second
Diameter: 24.60 x 21.50 mm
Thickness: 2.57 mm
Balance spring: flat hairspring