Check the listing for details. Tri-Tronics Upland G3 EXP System With BEEPER, Unit Only Untested. Color: Black, Condition: Used, Made in United States. Listed at 99.97 USD. The Tri-Tronics Upland G3 EXP System with Beeper is a remote training system designed specifically for hunting dogs. It features a red collar strap, black color, and operates on batteries. The transmitter and receiver are both G3 EXP units from the trusted brand Tri-Tronics. This system is ideal for hunting sports and activities, with the transmitter offering English language settings. Made in the United States, this classic G3 EXP model is a must-have for dog trainers and hunters looking to enhance their training experience. This used to work perfectly fine before I ended up losing the charger and eventually, I lost the remote as well. I’ve never really found it. I will list it as untested.