Dog Anti-Bark Collar, Purple, USB Rechargeable

I purchased this to reduce excessive barking when my puppy was young.
I'm selling it now because it's no longer needed, perhaps due to its effectiveness or the dog's growth.
The strap was excessively long, so I cut a small portion off.

??Below is the product description from the purchase page!

This is a bark control collar, a bark controller. It automatically switches between beep sounds and vibrations based on the number of barks.
It is expected to help reduce or stop excessive barking.

With each bark, the beep sound gets longer over 7 levels.
Vibrations are added partway through, and the duration of the vibration also gradually increases.

Additionally, the sensitivity level for detecting barks can be adjusted across 7 levels.
Please use the appropriate level according to your dog's temperament.
Adjust as needed for your situation.
The sensitivity resets to the middle setting each time the power is turned off and on again.

Rechargeable and reusable - the battery lasts for 10-14 days.
Charging is complete in 2-3 hours.
Please refrain from using it on dogs weighing less than 5kg or younger than 6 months old.

Adjust the strap to fit your dog's size.

Collar material: Nylon

Bark control unit dimensions (Length x Height x Depth): 7.1 x 4.1 x 2.5 cm
Weight: Approximately 53g (including strap)