Watertight watch

A watertight watch comprised of a housing, composed of a center part (1) which possesses a molded-on glass collar (1a), a watch glass (2) having a rim (2a), a first seal (4) being engaged with the rim (2a) adjacent to the watch glass and engaging the glass collar (1a), and a metal base (3) secured to the center part (1) with the inter-position of a second seal (5), and having means for axially compressing the first and second seals (4, 5), wherein the base (3) further possesses an edge region (3a), the base (3) being engaged with the edge region (3a) over the underside of the center part (1) and bearing on the underside, wherein a movement retaining ring (6) made from plastic is inserted in the center part (1), wherein the first seal (4) is clamped between the movement retaining ring (6) and the rim (2a) of the watch glass and the second seal (5) is clamped between the movement retaining ring (6) and the base (3) and wherein the means for the axial compression comprise screws inserted from below the base which pass through apertures (9) in the edge region (3a) of the base (3) and are screwed into axial threaded openings (10) provided in the center part (1) resulting in the simultaneous securing of the base (3) to the center part (1), and wherein the base (3) is concavely curved downwards and wherein this curved base (3) is elastically prestressed by tightening the screws (8), this tending to reduce its curvature which it exhibits in the unstressed state.