400 meters remote control range * Small & lightweight rechargeable receiver;Submersible receiver (genuine waterproof) * 3 modes: Warning Beep Tone, Vibration, 7 levels of adjustable Shock * Adjustable TPU strap, it is suitable for small, medium and large dogs weighing from 15 to 150 lbs * Static shock at the highest intensity is adequate for extra large or stubborn dogs, and mildest shock will not harm even the smallest dogs