BLUETOOTH COMPATIBLE real Crocodile calls app provides you Crocodile Calls for Hunting at your fingertips. These Crocodile sounds are clear, crisp, lifelike and recorded from REAL Crocodiles. 7 Crocodile call soundtracks included. Simply connect the app to any Bluetooth speaker and you have an instant Crocodile electronic caller system. FEATURES: 7 Crocodile hunting calls.