The Tech Toc is a friendly, introductory product to hip training. It utilizes a ball bearing inside of a plastic capsule containing acoustical amplifiers at each end. As the swimmer rotates their hips while training, the ball hits each end of the capsule, providing the swimmer audible feedback on their hip rotation and movement. The device allows swimmers to hear, as well as feel the rhythm and pace of their stroke pattern and technique. The Tech Toc can be used by any age group for any swim distance or stroke. The Tech Toc takes the guesswork out of gauging the position of the hips and helps to perfect overall body position during freestyle, backstroke, breaststroke and butterfly. The faster the hips rotate, the faster the stroke tempo. Practicing improper hip rotation degrades the quality of the stroke and can also lead to shoulder strain and eventual muscle damage. With every stroke taken, it is important that the swimmer pops the hips up with each kick, allowing for recovery between kicks. Now in vibrant yellow color.