This is another device I designed. I used a flashlight body to hold all the electronics to listen, record and broadcast all kinds of animal calls. This really works great when you hear animal calls while in the field. Up to two minutes of calls can be recorded or broadcast from this simple device. Any calls can be downloaded from the computer, then played in the field. I utilized the parabolic reflector of the flashlight to broadcast the sound from the $2.30 computer speaker. The sound from the caller is very loud, so it can be heard from a long distance away.