JVC Portable Digital Recorder RD-R20 Silver Operation confirmed. There are scratches, scuffs, and dirt on the exterior. The instruction manual is dirty. Box included. No adapter included. This product features a stereo condenser microphone for excellent sound quality. Repeat: ● A-B repeat, one-track repeat, all-track repeat Metronome: Equipped with mechanical metronome, drum, claves, and beep (electronic sound) - 4 types Chromatic Tuner: ● Uses Korg's engine Speed Control: ● 50-150% *1 Key Control: ● ♭6～♯ (semitone, 1/10 semitone) Easy Cueing ● Up to 99 points can be set per song Overdubbing ● Up to 10 times Countdown Start ● Hand Clap Start ● Calendar Search ● Voice Title ● Gapless Playback ● Playback Mixing ● A-B Section Copy ● Easy Dubbing with Card ● FM Radio ● Practical Maximum Output (JEITA *2) 2.5W + 2.5W (when using AC power) 1.5W + 1.5W (when using dry cell batteries) Recording Media: Micro SD card Recording Format: Linear PCM (48kHz/16bit, 48kHz/24bit) MP3 (44.1kHz/128kbps, 44.1kHz/192kbps) Built-in high-sensitivity stereo condenser microphone Input Terminals: Line input/External microphone input x 1 Contact microphone/Guitar (external) input (mono standard jack) x 1 Input Impedance: 470kΩ (Line/Mic input is 47kΩ) Maximum Input Level: 0dBV Interface: USB 2.0/1.1 (High-speed compatible), USB mass storage class compatible USB Input ● Body Color: Silver Sound Mode: Active Clear Sound, 5-band equalizer Timer Recording/Playback Timer: ●/● Display/Convenient Functions: Dimmer function ● (Auto) Auto Standby: ● Speaker Type: 1-way bass reflex type Speaker: 4cm Power Supply: AC 100V (50Hz/60Hz), AA alkaline batteries (3) or AA rechargeable nickel-metal hydride batteries (3) Power Consumption: When power is ON: 2W Standby: 0.1W or less Battery Life (Playback): Approximately 19 hours External Dimensions (W x H x D) mm: 192.4 x 92 x 58.6