Built with rugged durability in mind for those long days in the marsh or field, the DT Master Retriever 1100 Remote Trainer is ready for any and all conditions. Features 100% waterproof collar and transmitter, 1100-yard range, 16 levels of e-stimulation, vibration assist mode, and a compact, lightweight design to handle anything you and your dog can dish out.• 1100-yard range with compact antenna technology• MAXX-Range 360 Internal Collar Antenna System• Fully waterproof transmitter-remote• Uses 9v battery• 16 intensity levels of Gentle Touch Nick and Continuous e-Stim• Vibration Assist (no shock vibration training stimulus)• Built-in magnetic ON/OFF system• Compact, lightweight, 100% waterproof collar is fully rechargeable• Collar adjusts from 6" to 22" in 1/2" increments• Collar weighs only 4.7 oz.• Expandable to 2-dog or 3-dog system with easy turn dial• Premium DT Systems Limited Lifetime Warranty 16 intensity levels of Gentle Touch Nick & Continuous e-Stim Vibration assist mode for no-shock vibration training Rechargeable collar adjusts from 6"" to 22"" | DT Systems Master Retriever 1100 Remote Trainer, Black