The invention relates to a regulator device (200) for a clockwork movement (300), comprising: - an inertial element (11) of a resonator (10) pivoted about a first axis (A1), the element inertial being inscribed in a first cylinder of diameter D centered on the first axis and the resonator (10) having a first inertia l; - an exhaust mobile (30) pivoted around a second axis (A3), the exhaust mobile being inscribed in a second cylinder of diameter D3 centered on the second axis and having a second inertia I3; - a blocker comprising: • a first blocker mobile (20a) pivoted about a third axis (A2a), inscribed in a third cylinder of diameter D2a centered on the third axis and having a third inertia I2a; and • a second blocker mobile (20b) pivoted around a fourth axis (A2b), inscribed in a fourth cylinder of diameter D2b centered on the fourth axis and having a fourth inertia I2b, the first and second blocker mobiles being arranged so as to cooperate with each other, the regulator device being such that: D2a × | 2a 4.10 - 4 × D × I, and / or D2b × l2b 10 - 4 × D × I, and / or D3 × l3 7.10 - 5 × D × I.
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