Three-mode calling with 100 authentic Johnny Stewart sounds. In Standard Mode, the unit plays precisely as recorded. Sound Shuffle randomly shuffles sound segments in the original loop to avoid educating animals. The Custom Sequence Mode plays sounds in a sequence custom designed and programed by you. Boasts ergonomic remote with 16 sound presets and an LCD display that operates up to 300 yards. Plus, it operates in all audio formats, including 24 or 34 bit, and has 4GB of internal storage. High-quality speakers have adjustable amp power output of 9 watts or 18 watts for long-range calling. Integrated GPS tracking. Base unit has 16 sound presets, can play two sounds simultaneously and operates on eight AA or eight C batteries (not included). Remote is powered by a rechargeable lithium-ion battery (included).