Container that protects the watch movement from dust, damp and knocks.
The case is part of the watch's appearance and, influenced by fashions and buyers' personal taste, must have visual appeal.
The main parts of a Lépine pocket watch case are the middle, inside which the movement is secured, and the caseband. On the bridge side, the middle of the case is closed by the back cover (sometimes with a second cover inside called a cuvette). On the dial side it is closed by the bezel that secures the glass.
The most common case shapes are: