A transceiver and transmitter are shown. The invention provides a means for coupling a charging plug and battery having different mechanical form factors. Disclosed is a flocculation treatment agent including a water-in-oil emulsion of a water-soluble macromolecule that is produced by subjecting a water-in-oil emulsion of an aqueous poly-N-vinylcarboxylic acid amide solution coexisting with a polyoxyalkylene alkyl ether to hydrolysis in the presence of an acid or a base. Alternatively, using a microphone close to the unintended listener’s ears and a suitable feedback arrangement, the null can adaptively be aligned with the direction of minimum desired sound transmission. Finally, a reflective cleanup polarizer reflects the P-polarized-light back to the respective first and second light source and passes the S-polarized-light.