Timepiece, particularly a wristwatch, comprising: - a timepiece movement, - a watch case element, and - a system for fixing the timepiece movement to the watch case element, the fixing system comprising at least one clamp, in particular at least two clamps, preferably three clamps or four clamps, which is intended to come into contact firstly with the movement and secondly with the watch case element, the timepiece movement and the watch case element being arranged such that the bearing or contact of a first bent end of the at least one clamp against the movement and/or the bearing or contact of a second bent end of the at least one clamp against the watch case element is/are such that the clamp is elastically deformed in a state where the movement is fixed to the watch case element or in a state where it is displaced relative to the watch case element from a rest position in which a first surface of the movement is in contact against a second surface of the watch case element, the timepiece being characterized in that it comprises, in the fixed state of the movement to the watch case element and the movement being in said rest position, a first clearance between the clamp and a point of the movement against which the clamp can come into contact by bending of the clamp during said displaced state, the value of the first clearance being less than Lc1, or even less than Lc1/3, or even less than Lc1/4, and/or the value of the first clearance is greater than Lc1 /60, or even greater than Lc1/30, with Lc1 being the length of a projection in the plane of the movement of a third surface of the movement against which the clamp can come into bearing during said displaced state, the length Lc1 being between Lf/10 and Lf with Lf being the length of the bent clamp, and/or in that the timepiece comprises, in the fixed state of the movement to the watch case element and the movement being in said rest position, a second clearance between the clamp and a point of the watch case element against which the clamp can come into contact by bending of the clamp during said displaced state, the value of the second clearance being less than Lc2, or even less than Lc2/3, or even less than Lc2/4, and/or the value of the second clearance being greater than Lc2/60, or even greater than Lc2/30, with Lc2 being the length of a projection in the plane of the movement of a fifth surface of said watch case element against which the clamp can come into bearing during said displaced state and the length Lc2 being between Lf/10 and Lf with Lf measured in the rest state. - a timepiece movement, - a watch case element, and - a system for fixing the timepiece movement to the watch case element, the fixing system comprising at least one clamp, in particular at least two clamps, preferably three clamps or four clamps, which is intended to come into contact firstly with the movement and secondly with the watch case element, the timepiece movement and the watch case element being arranged such that the bearing or contact of a first bent end of the at least one clamp against the movement and/or the bearing or contact of a second bent end of the at least one clamp against the watch case element is/are such that the clamp is elastically deformed in a state where the movement is fixed to the watch case element or in a state where it is displaced relative to the watch case element from a rest position in which a first surface of the movement is in contact against a second surface of the watch case element, the timepiece being characterized in that it comprises, in the fixed state of the movement to the watch case element and the movement being in said rest position, a first clearance between the clamp and a point of the movement against which the clamp can come into contact by bending of the clamp during said displaced state, the value of the first clearance being less than Lc1, or even less than Lc1/3, or even less than Lc1/4, and/or the value of the first clearance is greater than Lc1 /60, or even greater than Lc1/30, with Lc1 being the length of a projection in the plane of the movement of a third surface of the movement against which the clamp can come into bearing during said displaced state, the length Lc1 being between Lf/10 and Lf with Lf being the length of the bent clamp, and/or in that the timepiece comprises, in the fixed state of the movement to the watch case element and the movement being in said rest position, a second clearance between the clamp and a point of the watch case element against which the clamp can come into contact by bending of the clamp during said displaced state, the value of the second clearance being less than Lc2, or even less than Lc2/3, or even less than Lc2/4, and/or the value of the second clearance being greater than Lc2/60, or even greater than Lc2/30, with Lc2 being the length of a projection in the plane of the movement of a fifth surface of said watch case element against which the clamp can come into bearing during said displaced state and the length Lc2 being between Lf/10 and Lf with Lf measured in the rest state.