Parmigiani Fleurier Watch Tonda PF Automatic Steel Warm Gray 36 PFC804-1020002-100182. The Tonda PF Automatic is the purest embodiment of the brand’s spirit. Its assertive identity is expressed through complimentary values of design discretion, a wide dial opening, subtle chromatic variations, and uncompromising finishes. All these values persist in the new Tonda PF Automatic, reinvented today with a diameter of 36mm.