The EZT plus Series offers Maxx-Range�, the industry's only internally woven antenna in the collar. With up to a 1,200 yard range, they are perfect for hunting, basic obedience and professional training. The EZT plus Series collars feature Sixteen levels of stimulation intensity. Because there is only one button for each feature, Nick or Constant stimulations, this allows for easy one-handed, �no-look� operation for efficient training. 6 month Collar Clinic warranty. 30 day money back guarantee.