700 Yard range with our exclusive MAXX-Range 360 Internal Collar Antenna System for 360 degree signal reception in all terrain types; RapiDial posi-lock selector knob ensures the proper setting of 10 easily adjustable Gentle Touch levels of Nick (.5 sec) and Continuous Stimulation (to 8 sec.); RapiDial posi-lock selector knob ensures the proper setting of 10 easily adjustable Gentle Touch levels of Nick (.5 sec) and Continuous Stimulation (to 8 sec.); Includes Vibration Assist and Beeping Tone Training Modes; The Patented "Jump" feature is a one touch option to instantly go to a higher or lower level of stimulation, and is user programmable to any stimulation level from 1-10; Lightweight, Compact Collar design is completely Waterproof and fully adjustable to fit small to large dogs (6" to 22" neck size); Expandable to 2-dog or 3-dog system with DD 700 Add-On collars: Toggle switch on Transmitter easily selects between dogs; Collar includes rechargeable Quick Charge Li battery (2-3 hour charge time) Remote uses easily replaceable 9v battery (not incl.); Built in waterproof Magnetic ON/OFF system; Rechargeable Remote Battery system sold separately