The California uses a California dial – Roman numerals on the upper half of the dial and Arabic on the bottom half – with a sub-seconds dial at 6 o’clock. It is powered by the Ronda 6004.B movement. The GMT has a similar outer track as the Field Officer dial, only rather than numbered for 12 hours it has a 24 hour scale for the GMT hand. It has the dual time and seconds, but no date, running on the Ronda 515.24H movement.
The full shared specs of the watches are as follows:
Width: 42mm
Thickness: 10.9mm
Lugs: 20mm
Crystal: Hardlex
Case: 316L Stainless Steel
WR: 30M
Strap: 20mm Buffalo-grain leather
Automatic with hand-wound and hacking
TMI Japanese movement, Cal. NH38
Domed sapphire glass with AR and AF coating
CuSn8 Bronze case
Screw-down crown
Water resistance: 10 BAR
Power reserve: ~41 hours
Super-LumiNova® hands and dial - Glows in the dark after being exposed to strong light.
Accuracy: -20 to +40 seconds per day (23º± 2ºC)