The TASCAM MP-VT1 is perfect for music and vocal training. I've had it for over 10 years now... (^^；) It charges with an AC adapter, but after all this time, the battery can't fully charge anymore. It works fine when plugged in... Unlike me, the exterior and display haven't aged a bit? They're still in great shape♪ It's been a fun trainer that I've used for more than just training. If you're interested, please check it out♪ ( ゜_ゝ゜ ) ★ The main unit's battery is weak ★ It works when the AC adapter is plugged in ★ The display is still bright ★ The main unit is honestly in good condition ★ Includes only the AC adapter and the main unit #Tascam #TASCAM #MPVT1 - Model: MP-VT1 - Brand: TASCAM - Function: Music/Vocal Trainer - Display: LCD - Connection Terminals: Headphone jack - Operation Buttons: Loop, Menu, Play button Thank you for looking.