Injection device for manual penetration and injection comprising a distal housing part (10) a proximal housing part (12) with a multi-chamber container (20) a plunger rod (40) a push button (70) an activation member (30) a drive force means(100) and a locking member (50), wherein the device further comprises a guide rod (60) arranged to generate an audible and tactile indication of the start of an injection.
