A golf sand wedge head which has a front planar face and a rear surface which is formed to include a plurality of precisely defined relief areas. The reference time identifier identifies a reference time used in determining the location information based on satellite signals. The bar should require less synthetic surfactant. The sensor may be configured with a plurality of sensor elements, such as ultrasonic transducers or eddy current sensors that may be configured to analyze different properties or different regions relative to the sensor location. The scan motor may include a static substrate; a dynamic substrate coupled to the static substrate via at least one flexible spring; a magnet coupled to a first side of the dynamic substrate; and a reflective element coupled to a second side of the dynamic substrate.