A medicament delivery device comprising: a housing having a distal and an proximal end, said housing being adapted to receive a medicament container with a delivery member or with a connectable delivery member for delivery of a medicament; a drive mechanism arranged to act on a plunger rod , which plunger rod in turn is arranged to act on the medicament container for providing automatic delivery of the medicament; a release mechanism interactively connected to the drive mechanism for releasing the drive mechanism from a pre-tensioned state; a signal generating mechanism for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely delivered, which signal generating mechanism is operably connected to said drive mechanism such that it is arranged movable in a longitudinal direction in relation to said drive mechanism , that said drive mechanism is arranged with a signal release mechanism capable of activating said signal generating mechanism at a certain longitudinal position of said drive mechanism after its release, for generating an audible and/or tactile and/or visual signal, wherein said signal generating mechanism comprises: a signal delay mechanism operably arranged to delay the generation of signal after activation of said signal generating mechanism wherein said signal generating mechanism comprises a signal generating element wherein said signal generating element comprises a generally tubular body ; said delay mechanism comprises an element operably connected to said signal generating element and arranged to act between said signal generating element and said drive mechanism , characterized in that the element is a friction enhancing element , wherein said generally tubular body of the signal generating element is slidably arranged in a correspondingly shaped passage , and wherein said friction enhancing element is arranged to act between the body and walls of said passage . a housing having a distal and an proximal end, said housing being adapted to receive a medicament container with a delivery member or with a connectable delivery member for delivery of a medicament; a drive mechanism arranged to act on a plunger rod , which plunger rod in turn is arranged to act on the medicament container for providing automatic delivery of the medicament; a release mechanism interactively connected to the drive mechanism for releasing the drive mechanism from a pre-tensioned state; a signal generating mechanism for generating an audible and/or tactile and/or visual signal indicating that the medicament has been completely delivered, which signal generating mechanism is operably connected to said drive mechanism such that it is arranged movable in a longitudinal direction in relation to said drive mechanism , that said drive mechanism is arranged with a signal release mechanism capable of activating said signal generating mechanism at a certain longitudinal position of said drive mechanism after its release, for generating an audible and/or tactile and/or visual signal, wherein said signal generating mechanism comprises: a signal delay mechanism operably arranged to delay the generation of signal after activation of said signal generating mechanism wherein said signal generating mechanism comprises a signal generating element wherein said signal generating element comprises a generally tubular body ; said delay mechanism comprises an element operably connected to said signal generating element and arranged to act between said signal generating element and said drive mechanism , characterized in that the element is a friction enhancing element , wherein said generally tubular body of the signal generating element is slidably arranged in a correspondingly shaped passage , and wherein said friction enhancing element is arranged to act between the body and walls of said passage . <EOS>