The present invention relates, among many things, to novel 4,5-dihydro-1H-pyrazole compounds which can be potent antagonists of the cannabis CB1-receptor. The onoff switch is operable through a button element, a position of which is determined by the position of the switch. The outer circumferential length of the ring material 203 of the third layer is longer than the inner circumferential length of the ring material 204 of the fourth layer, and the ring material 203 of the third layer is press-fit into the ring material 204 of the fourth layer. The detection circuit also includes a first signal output circuit that compares a first voltage, corresponding to a voltage at the cathode of the first diode, and a voltage output from the first reference-voltage output circuit and that outputs a signal indicative of polarity of the AC voltage having the first phase according to a comparison result. The container means includes a substantially smooth exterior surface extending between the opposing sides.