A system and method for performing free or low cost online digital media download with coupons is disclosed. A probe packet, including a tag indicating a transmit port from which the probe packet was transmitted and a receive port at which the probe packet was received, is sent from one network device to a next network device. 4 messages via a connection through the phone’s micro-usb slot without the need for an additional external battery. The insulating tubing is capable of standing off the RF voltage differences between different portions of the antenna, and between the antenna and the Faraday shield. They can stay on the skin for 6-8 hours, during which period natural herb essence enters blood circulation and performs a sustainable regulating function. Combinations of the invention ginseng materials with other active andor inactive materials are also disclosed.