D.T. SYSTEMS H2O Receiver Collar Stocking features slide out menus containing all features slide out menus containing all the tools and data you need to be in total control and can be removed to use the camera mount and JAW clamp as a low profile camera mount This Add On Collar can also replace a lost or damaged collar for all H2O 1800 and 1800 PLUS series systems (excluding Beeper models) Key Features:• Digital Technology• Adds to any H2O 1800 PLUS series training system(excluding Beeper models)• Replaces any lost or damaged H2O 1800 seriestraining system (excluding Beeper models)• Up to 1800 yard (1 mile) range• Lightweight and waterproof• MAXX Range Internal Antenna System• Rechargeable Ni MH batteries• Built in safety shut off system• Available Limited Lifetime WarrantyPackage Contents:• 1 x Collar Unit w Green collar belt• Double jack Cable