AETERTEK&reg; 600 yards Rechargeable Remote Dog Training Collar, for 15 to 150 lbs Two levels of Vibration/Shock E-Collar We have updated the new version with improved waterproof levels,your dog can swim in the water Easy to sync,just put the remote and collar closely. 550M remote range can meet most of training demand. Two levels of vibration and shock function is safer & more humane for training dogs. Well packed by aetertek fabric bag.