Tascam Guitar Bass Trainer. Recording Media SD card ( 64mb- 2gb) SDHC card ( 4gb - 32gb) Built in effects- Type, guitar amp, (reverb), Compressor, FX( chorus/flanger/phaser, Tremolo/auto Wah/delay. Sampling freq, 44.1 kHz, Power source, 2AA batteries, or, dedicated AC adaptor, weight 160g. I have pre loaded a 2gb SD card with 23 SHADOWS backing tracks, which are in W.A.V form... in used, but excellent cond.Check same on e.bay.!!!