A timepiece includes an inner rotating ring including a plurality of teeth portions; a driving crown including a head portion and a shaft portion; and a driving wheel including a hole portion engageable with and disengageable from the shaft portion, and configured to mesh with the teeth portions. The hole portion includes a plurality of protruding portions disposed at intervals of an angle smaller than 90 and protruding toward a rotation axis of the shaft portion.

A horology movement includes a control arbor (3) movealbe by pulling the arbor in the axial direction, a resonator (4) including a rotary balance (10) mounted on flexible blades, and a mechanism for stopping the oscillation of the balance. The mechanism incudes a lever (23) connected to the arbor, such that the lever is pivoted about a pivot axis (24) when the arbor, and an auxiliary lever (30) connected to the lever such that pivoting the lever causes the auxiliary lever to rotate about a rotational axis (31) separate from the pivot axis (24). The auxiliary lever is arranged such that it stops the balance (10), regardless of the position of the balance when the arbor (3) is initially pulled. Also, the lever (30) keeps the balance in a stationary position enabling the resonator (4) to restart automatically when the auxiliary lever (30) returns from active to rest position.