The system (1) has a pallet assembly (7) provided with a fork that cooperates with a pin mounted on a roller (5). A rod has arms (13) for receiving pallets (21) to cooperate with an escapement wheel (23), where a part of the system and the pallet assembly are made of a material that is partially amorphous and comprises a metallic element. The wheel, the pallets and the roller are made of the material. The part of the system includes recesses to reduce moment of inertia of the part.