Sunglasses; spectacles; range finders for golf; video cameras for analyzing golf swing; apparatus for measuring the speed of golf swing; navigation apparatus for golf course; downloadable electronic books in the field of golf instruction; cameras for analyzing the trajectory of golf balls;Torquemeters for golf shafts; golf club length measuringgauges; goggles for golf; golf ball finders, namely, golf scopes; downloadable computer software, namely, mobile location identification application fo...