Tascam MP-BT1 Bass Trainer. This is the older version with the built in memory and built in rechargeable battery. The new version requires a SD card and you have to put batteries in it. I bought this a few months ago as a backup and realized it doesn't make any sense to have two of them. So I am selling this for what I paid for it. Comes with Manual, Charger ($30 value) and usb cable.