build quality seems good, although we feel moving the battery in the transmitter case: it could have been blocked repetition of these movements may dabîmer the son of diet or desoldering. In use, it must go through the "Menu" button to switch from "siffet" to "vibration" or "electric shock" if your dog has not responded well to the first auditory stimulation it takes too long to activate another stimulus. If in addition, the transmitter is put into standby mode (from 30 seconds), the lighting also takes her time: long press 5-6 seconds! In short it is still lagging behind the dog's action.
