SelectaVision was a trademark name used on four classes of device by RCA: * The , a prototype video medium * Magnetic tape * VHS videocassette recorders, and * Capacitance Electronic Disc videodisc players and the discs themselves. Capacitance Electronic Disc's competitors, Philips/Magnavox and Pioneer, instead manufactured optical discs, read with lasers. On April 4, 1984, RCA, having sold only 550,000 players, ended sales, losing $580 million. The losses resulted in General Electric's acquisition of RCA in 1986, and the "SelectaVision" brand was abandoned.