The G3 Sport Basic trainer features an ergonomic design and abuse-resistant transmitter. Fully waterproof transmitter and receiver. On/off button, status LED and interchangeable short and long contact points on the receiver. 10 levels of momentary and constant stimulation. Separate button gives an aversive buzz for training without stimulation. Expandable to control three dogs with purchase of additional EXP receivers (one included). Long and short contact points for all coat types. Rechargeable collar (charger and cradle included) charges in two hours. 1/2-mile range. Transmitter uses 9-volt battery. All batteries included.