A timepiece (1) including a case (10) in which an automatic horology movement (14) having an oscillating mass (15) is embedded, the case (10) being closed by a back (12) and by a glass (11). The timepiece (1) includes a shock-absorbing organ (16) made of an elastomeric polymer material, embedded in the case (10) and inserted between the oscillating mass (15) and the back (12) to prevent direct contact between the oscillating mass (15) and the back (12) in the event of shocks to the timepiece (1).

There is provided a device (100) for maintaining or limiting the shake, in at least one direction, of a timepiece component (30) The device includes a stationary structure (20) arranged to abuttingly receive at least one surface of the component (30), and a rotary bolt (10), cooperating with the stationary structure (20). The rotary bolt (10) is rotatable about an axial direction (A) between a first angular position, referred to as the unlocking position, allowing the component (30) freedom of movement and a second angular position, referred to as the locking position, limiting the travel of the component (30) relative to the stationary structure (20) in the at least one direction, and characterised in that the second angular position, referred to as the locking position, of the rotary bolt (10) is secured by a resilient return (3).