Junk Daitoubu Hyper Air Pump HA-1800 Pump

This is a junk item. Body only.
The power turns on and it operates, but no air is produced.
It's hard to see, but image 16 shows it operating, and image 17 shows it powered off.
It seemed like it might be fixable around the battery compartment, but it's likely a pump malfunction, so I can't fix it. I'm selling it to someone who can repair it.
I previously ruined one I was using by letting it rust, so I was careful with saltwater and rinsing it after use, but please purchase at your own discretion.
If needed, I can include tubing and a stone as a bonus, though they are not original accessories. Please comment if you'd like them.
Batteries are not included.

Details↓
High power of approximately 1.8L per minute, ideal for live horse mackerel and live鮎 (sweetfish).
Continuous operation of approximately 60 hours.
Drip-proof specification for peace of mind even in rainy weather.

Batteries used: Two D-cell alkaline dry batteries (domestic)
Continuous operation time: Approximately 60 hours
Airflow: 1.8-1.5L/min*
Specifications: Drip-proof
Main unit function: 1.5V small motor for toys
Battery life: Approximately 60 hours*
*Specifications: For containers 20L or less (water depth 20cm or less), with included plastic stone and alkaline batteries.

Daiwa
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DAITOU