Get basic and solid results from a reliable e-collar using the GS-1500. It's perfect for use in the yard, or at a park to teach obedience. The transmitter features 15 levels of momentary and continuous stimulation with an LCD screen. The compact hand-held transmitter conveniently fits in a trouser or jacket pocket, around your neck on the included lanyard. The receiver collar is 100% waterproof and submersible, in the event your dog decides to take a swim. Both collar and transmitter have rugged and ergonomic housings, battery status indicators and simple controls. This system operates consistently out to 400 yards. Collar runs on long-lasting, fast-charging lithium-ion batteries; transmitter runs on 9-volt replaceable batteries.