Wireless remote has 10 sound keys so you can instantly find the sound you need. Includes 10 pre-loaded sounds. Additional sounds can be downloaded and changed out through the USB port. Features 128 MB of internal memory, a large speaker and an external speaker jack for an extra speaker. Base unit is powered by 4- AA batteries (not included). Remote is powered by 1- 12V/A23 battery (included). Operates out to 50 yards. Runs up to 6-8 hours on a set of batteries. 20 step volume- up, down and stop. Weighs 2 lbs. with batteries installed.