The Tech Toc is a simple training tool worn around the waist that provides swimmers with instant stroke feedback and ensures proper hip position during all four strokes. Made of a plastic capsule, the Tech Toc utilizes a ball bearing and acoustic amplifiers in order to create a sound as the device is tipped from side to side. This audible feedback lets swimmers hear and feel hip movements and notify them of proper hip rotation and undulation. Utilizing the hips and core muscles is one of the best ways to create an efficient stroke. The Tech Toc also has a Delay Setting which delays the ball bearing, forcing swimmers to exaggerate hip training.