A golf ball comprising an electrical component is disclosed herein. The electrical component comprises an integrated circuit having a gyroscope, a magnetometer, and a BLUETOOH low energy (BTLE) radio, and at least one battery. A body is composed of an epoxy material, and the body encompasses the electrical component.

A golf ball includes a core, a mid layer, and a cover. A slope A1 of a straight line connecting a central point of the core and a point at 2.5 mm from the central point and a slope A2 of a straight line connecting the point at 2.5 mm and a point at 5.0 mm from the central point are each 1.00 or more. A slope A5 of a straight line connecting a point at 10.0 mm from the central point and a point at 12.5 mm from the central point and a slope A6 of a straight line connecting the point at 12.5 mm and a point at 15.0 mm from the central point are each 1.50 or more. The cover is formed of a resin composition containing an ionomer resin, with the ionomer resin present in an amount of 60% by mass or more.