Crimping pliers comprising a) a pliers jaw , b) a die half which can be supported or is supported on the pliers jaw and c) a force sensor for measuring the crimping force biasing the die half , wherein d) the force sensor comprises a piezo film , e) the force sensor is connected electrically to an electronic construction unit , f) a moveable hand lever is linked for being pivoted by a pivot bearing to a fixed pliers body , the moveable hand lever is connected at a location remote from the pivot bearing by another pivot bearing to a pressure lever which is linked in the other end region by a pivot bearing to the pliers jaw and the pivot bearings form the pivot bearings of a toggle lever drive which moves towards its extended state when moving towards a closed position, g) the crimping pliers comprise a mechanical pliers part by means of which the mechanical crimping functionality is provided and which comprises the mechanical construction elements, in particular the hand lever pivoted relatively to each other, the pliers jaws and a drive mechanism coupling the hand levers to the pliers jaws, h) an electronic construction unit is formed separately from the mechanical pliers part and joined on at least one side of the pliers head of the crimping pliers to the mechanical pliers part and held by the same and i) the electronic construction unit comprises a displacement sensor which comprises a first sensor element (in particular a circuit board) arranged at a housing of the electronic construction unit as well as a second sensor element held by the pressure lever , the displacement sensor sensing the relative movement of the sensor elements over the crimping stroke. a) a pliers jaw , b) a die half which can be supported or is supported on the pliers jaw and c) a force sensor for measuring the crimping force biasing the die half , wherein d) the force sensor comprises a piezo film , e) the force sensor is connected electrically to an electronic construction unit , f) a moveable hand lever is linked for being pivoted by a pivot bearing to a fixed pliers body , the moveable hand lever is connected at a location remote from the pivot bearing by another pivot bearing to a pressure lever which is linked in the other end region by a pivot bearing to the pliers jaw and the pivot bearings form the pivot bearings of a toggle lever drive which moves towards its extended state when moving towards a closed position, g) the crimping pliers comprise a mechanical pliers part by means of which the mechanical crimping functionality is provided and which comprises the mechanical construction elements, in particular the hand lever pivoted relatively to each other, the pliers jaws and a drive mechanism coupling the hand levers to the pliers jaws, h) an electronic construction unit is formed separately from the mechanical pliers part and joined on at least one side of the pliers head of the crimping pliers to the mechanical pliers part and held by the same and i) the electronic construction unit comprises a displacement sensor which comprises a first sensor element (in particular a circuit board) arranged at a housing of the electronic construction unit as well as a second sensor element held by the pressure lever , the displacement sensor sensing the relative movement of the sensor elements over the crimping stroke. <EOS>