Tascam GB-10 Portable Trainer/Recorder for Guitar & Bass - mp3/WAV file playback and WAV file recording, amp simulation, integrated compressor and multi-FX, tempo control (50-150%), adjust the key without affecting the tempo, in-out loop playback, flashback function, integrated tuner & metronome, pre-recording buffer, auto recording feature, SD/SDHC slot, optional RC-3F available, USB 2.0 port, instrument input (1/4" jack), stereo line out/headphone out. Powered via batteries, optional Tascam PS-P520 power supply or USB. Includes 2GB SD card and USB cable. Dimensions: 158 x 30 x 70mm. Weight: 0.16kg