Review on 🐶 Rechargeable Dog Training Collar with Remote - Ecollar Training Collar for Small Dogs, 3 Training Modes (Beep, Vibration, Shock), Adjustable Shock Levels 0-15, Range Up to 1000Ft, IP67 Waterproof by Nancy Meyer

Missing dog training feature. The shock MUST emit an audible signal immediately prior to the shock. Then the dog associates "beep” with bad. You can then use the beep only mode after a week of shock and beep training. The lack of that sonic shock combo means you will never teach your dog to be afraid of the horn and makes this whole collar 100% useless. China garbage, they made a training collar without knowing anything about training. I'm sure they don't care either. Only buy this collar if you want to permanently shock your dog.