1, Built-in 10W,115dB speaker; 2,With remote control; 3,Support 12V power; 4,Support 2 external speakers. MP3 ... birds voices to play for bird huntingProduct specifications:1. Concolorous LCD display screen2. Built-in speaker3. USB 2.0 Transfer rate4 ... lithium battery, can play for 15 hours or so10.Accessories: Remote control, Battery,Charger, USB cable, User'smanual, White -box11.Main Markets ...