From old datasheet system 5.0 mm ′ 2.0 mm series 5.0 MM ? 2.0 MM series Opto-Electronic Device - Visible Light Emitting Diodes - Point-Lighting LEDs 5.0 mm 2.0 mm series
Stereo Preamplifier for Compact Double Cassette Playback-only Use Audio Power Amplifier: Stereo Pre-Amplifier For Compact Double Cassette Playback-Only Use