pocket-size
US /ˈpɑː.kɪt.saɪz/
UK /ˈpɑː.kɪt.saɪz/

1.
de poche, miniature
small enough to fit into a pocket
:
•
He carried a pocket-size notebook everywhere he went.
Il emportait partout un carnet de notes de poche.
•
The new camera is incredibly pocket-size and lightweight.
Le nouvel appareil photo est incroyablement de poche et léger.