The SportDOG Brand YardTrainer 100 Electronic Dog Training Collar combines the simplicity of a basic e-collar training system with the versatility and ruggedness of a more advanced sporting dog trainer. This is a great electronic dog collar for basic obedience training around the house, yard, or park, or any situation where the dog is within 100 yards of the trainer. Choose from 3 stimulation types: vibration, tone, or static; and 8 levels of static stimulation. DryTek technology makes the unit waterproof, and submersible to 25'. Both the transmitter and the receiver run off rechargeable Lithium Ion batteries (included). The YardTrainer 100 Electronic Dog Training Collar includes: transmitter, receiver with collar, lanyard, charging cable, long contact points, test light tool, and basic training instructions with pro trainer Charlie Jurney. Manufacturer model #: YT-100. 100-yard range 3 stimulation types 8 levels of static stimulation Waterproof and submersible to 25 feet Rechargeable Lithium Ion batteries Training instructions from Charlie Jurney