This transmitter can be used to replace a lost or broken transmitter for Remote Field Trainer SD-425 and SD-425s systems. This replacement transmitter can also let you turn your multi-dog unit into 2 smaller systems.
Specifications:
500 yd range
Waterproof
Nick and Constant
Tone and Vibration
7 stimulation levels
Includes antenna, lanyard and belt clip. Charger not included.