Great barking collar and adjustable for my little 8 lb Pomeranian. Alot of collars don't fit him but this one does. The extra pieces we bunched and rubber band on the side out of the way with small clear hair ties. The sound and vibration alone distracted him and works on cue. We set the sound on 7 and vibration on 7 and shock on 1. Some collars go off when he shakes but surprisingly this collar doesn't. Worth it.