Abstract: A golf ball having internal parts which provide sound-emission upon the ball being struck, the sound continuing until the ball is found and the golfer releases the actuation switch, that action also cocking the device for the next golf shot which re-starts the sound-emission.The sound-emission parts are all carried internally by the ball body; and they include an electric sound-emitter, a movable carrier member, a metallic inner cap for the carrier member, and a metallic actuator member. A spring both biases them into sound-emission contact and also serves as a conductor in the sound-emitter circuit. Frictional and releasable holding means provide for establishing and maintaining a sound-silent condition, against the bias of the spring.An actuator tool is provided, having both an actuator shaft and a torque lug, for convenience of manual actuation of the device details.