Lightweight and useful. My dog responded right away. (He’s medium sized.) I’m always nearby when I activate it. The beep sound button I have not used much yet. I can’t decide how to I want to use it for. (For either calling him or deterring him.) Charging was fast and lasts a long time. Green for good charge and red for when you’ll need to recharge. Instructions are a easy to understand.

Excellent goods, but does not work for all dogs. Small and some medium and homeless run away. On large and household dogs mostly does not work, but there are exceptions. In general, I am happy with the goods, I managed to drive a pack of homeless dogs to them at night, as they did not allow to sleep a range of up to 100 meters,, Recommend!

Good product is effective with a medium size/large dog at the minimum beep gets scared and obeys. I recommend not abusing the device and using it only on specific occasions as training as it can stun or scare the animal or alenos use blow the beep button as a warning.

I order the second time from the same seller again two devices. Everyone's happy. They run away, but there are old ones they can't hear. It doesn't work on them. Charging is enough for a long time. Fire lighters extinguishes. I advise the goods and the seller.

I 've tried it with several dogs and it doesn't work with everyone, but with most of them. For the price is a good alternative to controlling violent street dogs when you walk.