Esky EP-300R-B1 Rechargeable 330 yd Remote Control Dog Training Collar with 100 Level of Vibration+ 100 Level of Static Shock+ Tone For 15-120lb Dog 100 Level of Vibration + 100 Level of Static Shock+ Tone 15-120lb Dog; Rechargeable remote transmitter and collar-receiver Four modes(static shock/vibration/beep/light) at your disposal 100 intensity levels of vibrations/static shocks are adjustable Easy to sync the remote transmitter with the collar receiver The system can be used with 1 or 2 receivers. (The additional receiver should be the same type as your previous one and please search