1 Pc Pet Dog Whistle And Clicker Pet Multifunctional 2-in-1 Clicker Puppy Stop Barking Training Aid Clicker Portable Trainer

At first I didn't understand how to press it, I thought it was broken, but you need to get used to it and it presses well.

Doesn't work. The sound is invited, the dog paid no attention at all.

The whistle will whistle perfectly