Dogtra BALL TRAINER is expandable up to 8 devices and uses one controller that has a 100-yard range. Its dual-function and compact size makes it adaptable for a variety of training types, ranging from detection training to search and rescue training.
Package contents: Transmitter, Receiver, Belt Clip, Six AA 1.5V Alkaline Batteries (Receiver), Two AAA 1.5V Alkaline Batteries (Transmitter), and Owner's Manual.
Features:- Immediate rewarding from distance for behavior marking
- Versatility from dual function and compact size
- Expandable up to 8 devices
- 100 yard range
- Launches up to 5 feet
- Dropper holds up to 3 balls