A jewelry tag has a label with a printable side and an adhesive side. The magnetic thin film is formed in a longitudinal shape, and magnetic anisotropy is provided such that the direction of easy magnetization is orthogonal to the longitudinal direction of the longitudinal shape. The margining circuit also allows the fuses to be stressed and screened. The source wire is electrically connected to a source electrode of the first transistor via a first hole in the passivation film. The solution is to provide the nock with a reinforcement to prevent the failure or breakage of the arrow nock andor shaft.