KOSHIN Battery-Powered Sprayer GT-2S Instruction Manual & Batteries Included (New)

This is a listing for a battery-powered sprayer manufactured by KOSHIN Co., Ltd.
I purchased it for cleaning the aluminum fins of air conditioners.
I used it about twice, but it wasn't quite right for air conditioners. It's been sitting unused since then, so I'm decluttering. I believe it's been about 6-7 years since I bought it.
I have tested the spray function for this listing (photo 10).

[Specifications]
Manufacturer: KOSHIN Co., Ltd.
Model Number: GT-2S
Capacity: 2L
Spray Output: 240ml/min (mist), 400ml/min (jet)
Power Source: 4 x AAA batteries
Weight: 600g (main unit)
Type: Sprayer (nozzle can be adjusted between mist and jet)

[Condition]
It has only been used twice in practice, plus once for testing, for a total of three times. It has only been used with water, not with any chemicals.
The batteries have been removed for a long time, so there is no corrosion or rust from battery leakage.
I have tested the spray function and confirmed that it is in perfect working order.
There is no clogging in the strainer (suction port) mesh.
I believe the condition is very good.

[Accessories]
● Instruction Manual (copy. I made a copy because I accidentally smudged the original while trying to erase personal information.)
● 4 x AAA alkaline batteries (new)
* The chemical dilution cup that was included at the time of purchase is not included (I lost it).
● Strap (already attached to the main unit)

[Shipping]
The product will be placed in its original cardboard box, protected from moisture, cushioned with packing material, and then placed in another cardboard box for shipping.
* The original cardboard box has folds, tears, and tape marks.