This laser is for swing checks, enabling highly accurate golf swing analysis. - Brand: EYE-LINE - Model Name: CHECK POINT SWING LASER - Included: Storage pouch, instruction manual - Function: Laser for swing checks - Design: Black and silver color scheme Thank you for viewing. I received this as a gift, but I haven't used it and have kept it in storage. As I don't have much knowledge about this product, I would appreciate it if someone who understands it would purchase it. ※ Immediate purchase is welcome ^ ^ ※ Please note that the first person to purchase the item will be given priority, even during comment exchanges. ※ Please understand that this is a used item and purchase after confirming all the photos.