Cleverpets Remote Dog Training Shock Collar with Beep Vibration and Dog Tracker Tracking with Batteries Remote Trainer for small to medium sized dogs with a range of up to 200m. Multilevel Vibration and sound function. Remote Trainer at any time be extended to two dogs. Remote control with illuminated display. Transmitters and receivers rechargeable. Extra sturdy collar for a circumference of 18 to 68cm. Can be cut with scissors if needed. Extra small and lightweight waterproof collar receiver, suitable for dogs of 5-50kg.