An injection device comprising - a housing (10; 340; 410), - a dose setting member (60, 80; 350; 420, 440) being rotatable relative to the housing (10; 340; 410) in a first direction to set a desired dose to be dispensed, - a piston rod (30; 530) being adapted to cooperate with a piston so as to cause a set dose to be injected from a cartridge, and - a first part (123; 300; 480) of the injection device which, during dose setting and dose cancelling, is rotationally coupled to the dose setting member (60, 80; 350; 420, 440) and which, during dose setting and during dose dispensing, is adapted to undergo a rotational movement within the housing (10; 340; 410) and relative to the housing (10; 340; 410), and a second part (114; 310; 490) of the injection device, which is adapted to undergo a mere translational movement within the housing (10; 340; 410) and relative to the housing (10; 340; 410), wherein the first part (123; 300; 480) and the second part (114; 310; 490) are adapted to perform a relative rotational movement with respect to each other during dispensing of a dose, and which are adapted to provide a non-visual feedback signal to a user only at the end of dispensing of a set dose, characterized in that the dose setting member (60, 80; 350; 420, 440) is further rotatable relative to the housing (10; 340; 410) in a second direction which is opposite to the first direction to cancel a set dose, wherein the injection device further comprises a third part (100; 212; 320; 460) movable between a dose setting or cancelling position and a dose dispensing position relative to the first part (123; 300; 480) and/or the second part (114; 310; 490), which third part (100; 212; 320; 460) contacts the first part (123; 300; 480) and/or the second part (114; 310, 490) in its dose setting or cancelling position or in its dose dispensing position, wherein the third part (100; 212) is a button or a trigger operable to initiate dose dispensing or a part (100; 212) actuated by the button or the trigger, wherein the first part (123; 300; 480) is a number sleeve (120; 30; 480), which is marked with a sequence of numbers or symbols and which cooperates with the dose setting member (80, 60; 350; 420, 440) to set a dose, or a feature positioned on the number sleeve (120; 300; 480), wherein, in its dose dispensing position, contact of the third part (100; 212; 460) with the first part (123; 480) and/or the second part (114; 490) deflects or shifts the first part (123; 480) and/or the second part (114; 490) such that they engage each other at the end of dispensing upon the relative rotational movement during dispensing of a dose and thereby create the non-visual feedback signal, wherein, in its dose setting or cancelling position, contact of the third part (100; 212; 460) with the first part (123; 480) and/or the second part (114; 490) deflects or shifts the first part (123; 480) and/or the second part (114; 490) such that they disengage from each other, thereby preventing creation of the non-visual feedback signal, wherein the injection device further comprises a clutch (130; 483, 505) arranged between a drive member (40; 500), which acts on the piston rod (30; 530), and the number sleeve (120; 300; 480), wherein the clutch allows relative rotation of the drive member (40; 500) and the number sleeve (120; 300; 480) during dose setting and rotationally constrains the drive member (40; 500) and the number sleeve (120; 300; 480) during dose dispensing, and wherein the piston rod (30; 530) is splined to the housing (10; 340; 410) and threaded to the drive member (40; 500) or threaded to the housing (10; 340; 410) and splined to the drive member (40; 500). - a housing (10; 340; 410), - a dose setting member (60, 80; 350; 420, 440) being rotatable relative to the housing (10; 340; 410) in a first direction to set a desired dose to be dispensed, - a piston rod (30; 530) being adapted to cooperate with a piston so as to cause a set dose to be injected from a cartridge, and - a first part (123; 300; 480) of the injection device which, during dose setting and dose cancelling, is rotationally coupled to the dose setting member (60, 80; 350; 420, 440) and which, during dose setting and during dose dispensing, is adapted to undergo a rotational movement within the housing (10; 340; 410) and relative to the housing (10; 340; 410), and a second part (114; 310; 490) of the injection device, which is adapted to undergo a mere translational movement within the housing (10; 340; 410) and relative to the housing (10; 340; 410), wherein the first part (123; 300; 480) and the second part (114; 310; 490) are adapted to perform a relative rotational movement with respect to each other during dispensing of a dose, and which are adapted to provide a non-visual feedback signal to a user only at the end of dispensing of a set dose, characterized in that the dose setting member (60, 80; 350; 420, 440) is further rotatable relative to the housing (10; 340; 410) in a second direction which is opposite to the first direction to cancel a set dose, wherein the injection device further comprises a third part (100; 212; 320; 460) movable between a dose setting or cancelling position and a dose dispensing position relative to the first part (123; 300; 480) and/or the second part (114; 310; 490), which third part (100; 212; 320; 460) contacts the first part (123; 300; 480) and/or the second part (114; 310, 490) in its dose setting or cancelling position or in its dose dispensing position, wherein the third part (100; 212) is a button or a trigger operable to initiate dose dispensing or a part (100; 212) actuated by the button or the trigger,