This easy-to-learn goose call features built-in back pressure to help effectively call without complicated hand movements or any special calling techniques. With practice, the call has the ability to produce rapid clucks so multiple callers can sound like dozens of geese at one time. The compact, 5.5-inch call also comes with an audio/video instructional CD-ROM. Contact Illusion Systems at: (507) 281-0300; illusionsystems.com.