A lighting apparatus includes a light source module, a heat sink holding the light source module and a light-permeable cover mounted to the heat sink and covering the light source module. A titanium compound represented by the formula or below is sintered. The system provides comprehensive feedback for swing characterization including detailed swing timing metrics, dynamic club head orientation and motion metrics and dynamics shaft action metrics all referenced to the spatial domain. The method also avoids the pitch halving situation. Moreover, each actuator has an upper end coupled to the upper lift member and a lower end coupled to the lower lift member. The analyzer is configured to analyze a mixed result.