Sony - TCM-S66V Portable Compact Mono Portable tape recorder

The Sony Walkman TCM-S66V is a Walkman recorder/portable player with an external speaker, mic and headphone jack

Specialties - Cassette recorder and/or player
Operating voltage - Batteries + jack (etc.) for external power. / 3 Volts
Speaker - Permanent magnet oval speaker. / Ø 3.5 cm = 1.4 inches
Material - Modern plastic (Never Bakelite or Catalin)
from Radiomuseum.org
Model: TCM-S66V - Sony Corporation; Tokyo
Form - Pocket portable, under 20 cm.
Width, height, depth
120 x 95 x 34 mm / 4.7 x 3.7 x 1.3 inch
Notes
Cassette-Corder, Battery 1.5V x 2 AA, DC in 3V, Fast playback, V.O.R. switch (To ensure continuous recording even if sound level is low), Mic, Batt. LED, Counter, Mic plug-in, Earphone Jack.
Net weight
0.220 kg / 0 lb 7.8 oz (0.485 lb)