Great features, working well for us
"I have had several Dogtra models and a Tri-Tronics. I appreciate that both transmitter and receiver are waterproof, the digital display mean no guessing about battery status. My brother likes the tester vs me using his wrist. I like the belt clip. I considered the smaller unit for a less conspicuous receiver and smaller receiver. But adapting. Stim is reliable. Overall very happy with this upgrade."