CASIO VL-TONE Analog Synthesizer [JUNK]

Junk - Unstable operation. The sound comes out of the speaker, but the volume is very low. It might be a poor connection. Please assume no sound will come out unless the volume slider is at MAX. Occasionally, the volume can become extremely loud.
Image 8: The battery cover for the back panel is missing.
Image 15: It is unknown if there were any parts in the hole next to TUNING.
No sound can be heard from the earphone jack.
I do not have an AC adapter and have not tested it with one.

Box, instruction manual, and case are not included.

Since there is no instruction manual, I have not tested all the detailed functions.

The switch is turned ON/OFF with the slider at the top right.

Analog synthesizer with auto-play function
CASIO VL-TONE VL-1

- Buttons, sound, and keys: OK.
- There is crackling noise when moving the volume switch. This does not happen when sound is playing.

- Overall, there are scratches due to its age. Please consider this as a used item.

- Functions: Auto-play, One-key performance
- Tones: Violin, Flute, etc.
- Volume control: Yes
- Power: Requires 4 AA batteries

Shows signs of use.
★As this is a used item, please consider purchasing only if you understand this.
★There may be oversights. Please only consider purchasing if you are okay with this.

Will be shipped via Yu-Packet Post or Takkyubin.