Garmin Sport ProCOMPACT, ONE HANDED TRAINING OF UP TO 3 DOGS Compact, lightweight, ergonomically designed Simple, intuitive, no look one handed operation Quick turn dial with positive clicks when changing between 10 stimulation levels and when controlling auxiliary functions Settable BarkLimiter levels 4 training buttons for continuous and momentary stimulation, vibration and tone Compact and lightweight, the Sport PRO is simple, intuitive and so easy to use in 1