CTR-76 (140-1156) Specifications Faxback Doc. # 8377 Tape System..............................................2-Track Monaural Tape Speed........................................1 7/8 ips (4.75 cm/sec) Wow and flutter (WRMS)..............................................0.25% Signal-to-Noise Ratio...............................................35 dB Recording System...................................................Magnet Erase System.......................................................Magnet Power Requirement Internal Batteries.......................4 Size AA Batteries (6 Volts DC) AC Power...............................120 Volts with 273-1454 AC Adapter Vehicle Battery..........................12 Volts with 14-844D DC Adapter Typical Cassette Playing Time with AA Alkaline Batteries.............................12 hours (approx.) Dimensions...................................4 1/8 x 7 x 1 3/4 Inch (HWD) 105 x 178 x 45 mm Weight......................................................16 oz (450 g) Accessories..........................................Earphone, Erase Plug (RLR-10/07/93)