1 mile (1600 m) range; Beeper/Locator with Locate, Run & Point mode, and Point Only modes audible from 450 yards; 16 levels of Nick and Continuous stimulation Gentle Touch e-Stim; BOTH the Collar and Transmitter/Remote are RECHARGEABLE; No-Slip/Soft-Grip rubber coating on Transmitter; 100% WATERPROOF Collar adjusts from 12" to 23" to fit most dogs necks; 100% WATERPROOF FLOATING transmitter; MAXX-Range 360 Internal FM Antenna System embedded in collar belt; Built-in safety shutoff with Smart LED Low battery charge indicatory; Expandable to a two dog system with an additional Add-On collar; NOTE: Collar beeper location can be adjusted by DT Systems Service Center for smaller dog's necks