The Garmin Delta Sport, using proven Tri-Tronics technology, has all of the features as the Garmin Delta but is the first electronic dog training system with BarkLimiter built right in. BarkLimiter recognizes the difference between wanted and unwanted barks as well as vibration from scratching & scraping or from other dog's barking. It virtually eliminates false and over correction. Autorise adjusts the training level up to the optimum level needed to stop unwanted barking. Delta Sport is rugged and water resistant (IPX7) with a long-lasting rechargeable, lithium-ion battery in both the transmitter and dog device. Delta Sport comes with the Delta Sport handheld, Delta dog device with built-in BarkLimiter, Black 3/4" collar strap, charging clip, lanyard, USB cable, USB Split cable, AC adapter and manual.