Ultrasonic Dog Portable Barking Stopper

I was expecting the stop barking to be effective to my pit mix, my german shepherd and my little thiweenie but nothing happens at both ultrasound channels going few times one and few times the other nothing even the bipping not making any affect.

Received today worked good on small dog but had no effect on two larger dogs even with full charge and higher frequency

The product matches the specifications and description. I take it with me for a walk every day, have used it several times, have not charged the battery even once, it lasts a long time and has a very nice flashlight.

Looks ok i didn’t try yet

We have a very reactive foxy who constantly barks whenever someone passes the gate to our property. He won't listen to voice commands when in that state, so when i saw this device, i had to give it a go. .. and wow! He recalls straight away with the high frequency button. I haven't had to try any of the others on the device yet. He comes as soon as i call him and stops barking immediately, so hopefully i only have to use this infrequently.
Fast delivery to nz.
Im happy with this device.