Connections:

Two 1/4" unbalanced mic/line inputs
Switchable guitar input
Headphone/Line output
USB 2.0 connector

Recording:

Four-track digital multitrack recording
CD-quality 44.1kHz/16-bit WAV recording
Records to SD Card media (1GB card included)
Repeat, Record undo
Dedicated stereo mixdown track

Physical:

Powered through AA Batteries or optional PS-P520 power adapter
Battery life: About 8 hours recording, about 8.5 hours playback (alkaline batteries)
Dimensions: 6.1" W x 1.3" H x 4.2" D (155mm W x 33.5mm H x 107mm D)
Weight: 2.8 oz (360 g, w/o batteries)