So sophisticated, it"s simple. From the #1 brand in authentic wildlife sounds, Johnny Stewart delivers superior sound science that is extremely user friendly. The Bloodhound features 50 preloaded sounds with 2 GB of internal memory. It can play two sounds at once. The wireless remote has a range of up to 200 yards. The remote has a LCD display with real-time clock, stand timer and power save. The volume selection of 0-50 can be adjusted while in mute. Four programming presets. It features a powerful Omni-directional speaker and external audio jack. The base runs on either 8 AA or 8 C cell batteries.