Dual Hi-output remote control swiveling speakers - 180o. Remote Control - 250 yard range (Included). Mix two calls at one time. Independent motorized speaker movement remote control. Select a speaker to control audio output from speaker to speaker. Top mount SD access, USB output. 400 preloaded calls on a removeable 4GB SD card (Included). Menu / Sub menu call navigation by species. Favorites List creation. Full control panel. User accessible SD card slot up to 16GB (sold seperately). Caller operates on eight (8) AA batteries (not included). Remote syncing to base unit. 1/4" brass tripod mount on bottom - weight balanced center. 12V bettery box adapter post. Water Resistant housing design. The latest, most innovative idea in electronic call technology features full remote speakers rotation with 'dual' call capability. Simply put - position each speaker in any rotated direction where you want to emit a specific animal call chosen for each individual speaker. Complete field adaptability, complete programmable versatility.