Amazon.com: Garmin TT™ 15X Dog Device, Tracking and Training Dog Device with Collar, 18 Levels of Stimulation, Rugged and Water-Resistant, High-Sensitivity GPS, Red : Everything Else
Single Blink or Flash on T5 or TT15 Dog Tracking Collars | Garmin Customer Support
Garmin T5 Mini and TT15 Mini Software Update 3.90
Amazon.com: Garmin T 5X Dog Device, Tracking and Training Dog Device with Collar, Rugged and Water-Resistant, High-Sensitivity GPS, Blue : Everything Else
Support: Troubleshooting GPS Reception Issues on a Dog Collar - YouTube
Garmin TT15 & T5 Dog Collar Technical Support - YouTube