Extremely user friendly, the Bloodhound includes 50 authentic Johnny Stewart sounds and powerful, omnidirectional speakers for exceptional low- and high-frequency performance. Handheld remote is preset-capable with up to four sounds and operates up to 200 yards with a chargeable lithium-ion battery (included). The unit can play two sounds simultaneously and has 2GB of internal memory. External audio jack. Unit runs on eight AA or eight C-cell batteries (not included).