This is the GREENON LASER COACH SWING. - Brand: GREENON - Model Name: LASER COACH SWING - Accessories: USB cable, instruction manual, storage case - Features: You can check the movement of the shaft and the orientation of the face during your swing with a laser. The box appears to have cracked in some areas during storage, but this item is new and unused, kept in storage since purchase. When attached to the butt end of the grip, a laser emits from the butt end. You can visually check where the butt end is pointing during your downswing. For more details, please check the manufacturer's website. https://greenon.jp/g013s/ Thank you.