A method, system, and computer program product for optimizing power consumption of an executing processor executing. The threshold is then adjusted in response to changes in the supply voltage andor the speed of the electrical machine. A Felica circuit 24 is provided with an antenna, and is contained in the case C2. The apparatus may additionally include a golf club having predetermined dimensions. The IP addresses given in response to domain name resolution requests are selected to provide increased reliability andor dynamic load-balancing over paths. Methods for making such putter devices are also described.