The Half-Mile Hailer Outdoor Speaker System from AmpliVox is perfect for outdoor sporting events and speaking engagements. The 50-watt, weather-proof horn speaker has enough power to project sound the length of a football field. Add music and other outside media to presentations by plugging a CD player, tape deck or computer into the auxiliary stereo jack. Includes two horn speakers, two adjustable tripods, cords and wireless lapel and headset microphones. Move your PA system with ease in the nylon carrying case with wheels and retractable luggage handle.