SSK Swing Coach Baseball Training Product Description: By attaching the Swing Coach to the grip end of your regular bat and practicing batting, you can instantly know your swing speed, bat trajectory, and the time to impact. Please search online for more detailed information and usage instructions. This item is new, unused, and unopened, and has been stored at home. It was opened for the purpose of taking photos. There is some slight discoloration on the box due to home storage. Please refrain from purchasing if you are concerned. * Shipping is planned via Yu-Packet Plus or Yu-Pack.