Device for attaching wristband strands to a case

A device for attaching wristband strands to each side of the middle part of a watchcase without horns, closed by a back cover and by a crystal, wherein the inner surface of each wristband strand end includes at least two studs extending perpendicularly to said surface and each being pierced in their median part by a hole along a direction parallel to the length of the strand, in that each side of the middle part includes at least as many recesses as studs, said recesses being complementary to the studs in volume and positioning, each recess having in its median part perpendicular to the back cover, a through passage on the back cover side and a blind hole on the crystal side, and in that a staple, including as many branches as studs at each strand is engaged, on the back cover side, after the studs have been fitted into the recesses, through the through passages, the holes of the studs and the blind holes.