The Tech Toc is the only device that allows swimmers to gauge the position of their hips with relation to their hand and body position. The Tech Toc consists of a ball bearing within a plastic capsule that contains acoustical amplifiers at each end. This device allows swimmers to hear, as well as feel the rhythm and pace of their stroke pattern. As the ball hits the acoustical amplifier, it provides instantaneous feedback to the swimmer. Additionally, the coach can see a visual reference and hear an audible noise to help monitor hip rotation corresponding to the hand and body position.