"Add 2-dog training capabilities to your Delta SE dog-training system with the Garmin Delta SE Extra Dog Collar. Paired with the compatible handheld remote (not included), the Delta SE dog collar offers 10 levels of stimulation, tone, and vibration. Choose between 2 replaceable contact points, long and short, based on the length and thickness of your dog's coat. Rechargeable internal lithium-ion batteries power the collar for up to 60 hours on a single charge. Garmin Delta SE Extra Dog Collar includes dog collar (2.3""W x 1.4""H x 1.4""D; 2.5 oz.); blue 3/4"" collar strap; charging clip; USB-C cable; short and long contact points with wrench; and documentation. Add 2-dog training capabilities Compatible with Delta SE handheld remote 10 levels of stimulation, tone, and vibration 2 replaceable contact points Rechargeable internal lithium-ion battery"