The present invention relates to a medicament delivery device comprising a housing (10) having opposite distal and proximal ends; a medicament container holder (15) with a medicament container (14), disposed within the housing, wherein the container has a front opening with or for a delivery member for delivering the medicament therethrough and at least a movable stopper (16); a drive unit comprising a power source (20) and a plunger rod (24), wherein said drive unit is arranged to be movable between a non-delivery state in which said power source is in a cocked state and a delivery state in which said power source acts on said plunger rod which in its turn acts on said stopper (16) for delivering a dose of medicament from said medicament container (14); retaining means operably connected to said drive unit, and capable of holding said drive unit in its non-delivery state; and activation means (36) operably connected to said retaining means, and capable of releasing said drive unit from its non-delivery state; wherein the device further comprises a delivery indication mechanism (56) comprising a flexible band (58) arranged with different indications (60), guide means (62, 67) arranged on the inner surface of the housing for storing and guiding said band, and an opening (64) in said housing through which said indications are visible; wherein said band comprises a first end connected to said drive unit such that when said drive unit is released from its non-delivery state, said band moves through said guide means.