The Eichler Dual Game Call features dual 4 reflex horn drivers for maximum 120 db output. It has 80 preloaded predator calls 8 GB internal memory and 2" dot matrix display. The call also utilizes two external jacks to accommodate secondary amplified speakers sound overlay configurable preset volume levels and USB jack. Included is a 200 yd long range remote with four programmable quick sets easy read back lit and is powered by 9V battery not included."