Remote Training Features: 3/4-mile range 8 levels of continuous stimulation 8 levels of momentary stimulation Rechargeable NiMH batteries Low-battery alert Expandable to two-dog operation All components waterproof and submersible Beeper Features: Rugged, waterproof speaker unit Audible to 500 yards 9 tones to choose from Disable/Enable Locate/Run Mode beeper from remote Low battery alert 3 run modes (silent, 5-second beep or 10-second beep) Long-life lithium battery operation Beeper can be used independently of collar receiver Beeper Tones: 1 Low Volume Hawk 2 High Volume Hawk 3 Bobwhite Quail 4 Triple Beep 5 Low Volume Beep 6 High Volume Beep 7 Double High Volume Beep 8 High Falling to Low Volume 9 Double High Falling to Low Volume