Flexible portable electronic device capable of elaborating information, including a flexible body arranged to be capable of being secured to a part of the user's body, the flexible body including a lower flexible band and an upper flexible band. The flexible portable electronic device includes an electronic assembly for processing information, the electronic assembly for processing information including at least a first electronic component with a substantially flat surface, housed between the upper flexible band and the lower flexible band of the flexible body. The first electronic component is secured on only one portion of the surface thereof to one of the upper or lower flexible bands.