Spectacles have a frame, a pair of lenses and two nose pads. The frame has two lens mounts and a bridge connecting the lens mounts. The pair of lenses is mounted on the lens mount. Each nose pad has a top and a gear wheel pivoted on the bridge and having a circumferential surface and multiple driving teeth formed on the circumferential surface and meshing with the driving teeth of the gear wheel of the other nose pad. A person can manually turn either of the nose pads to adjust to a desired angle so as to conform to the person's nose, such that the spectacles can be comfortably worn on the person's nose.