Roland R-1 Portable 24-Bit WAVE Recorder & Player The R-1 is equipped with two omni-directional electret microphones for quick and clean capture. It offers superior results using internal microphones Pro-quality internal effects processor, equipped with 13 tools for perfecting your sound. Rugged yet compact at 3-15/16 (W) x 5-5/16 (D) x 1-3/16 (H) inches (8 ounces) Includes AC Adaptor Roland PSB-6U type, Carrying Case, Owner's manual Data transfer to Windows and Macintosh computer. The EQ of the R-1 offers a variety of presets for various styles of music. The R-1 also provides Tuner and Metronome functions, making it an excellent portable music-practice tool