Sony FM/AM Walkman
The W-23 is used for playback of cassette tapes. It contains an AM/FM tuner and pocket clip. It requires two AA batteries to operate.
RCA Victor 9Y510 Radio-Phonograph
The 9Y510 radio-phonograph is used for playback of 45 rpm records and is an AM radio. It contains an amplifier and an rp-190 automatic disc changer, which holds up to 12 records.Source: Vourtsis, Phil. The fabulous Victrola "45" (Atglen, PA: Schiffer, 2002), 56, 165.