Garmin Alpha TT25 Dog Collar With Tracking BeeperGarmin Alpha TT25 Dog Collar With Tracking Beeper. The Garmin Alpha TT25 with Tracking Beeper combines GPS tracking, 18 level training, and an audible beeper for upland bird hunters who run pointing dogs through cover where they need both location and audible point indication. The TT25 hardware platform with an integrated electronic beeper that runs on point or run modes for pointing dogs. Same 9 mile range, 18 stim levels, 7 color LED, and Wi Fi auto