Multimedia Computer Lectern features a sound system powerful enough to reach an audience with up to 1,500 people. Sound system includes a Hot Gooseneck Dynamic Mic & two Jensen-designed speakers. Power up to 200 hours with 10 D alkaline batteries. Cabinet design offers a slide-out locking shelf for your keyboard & two locking doors to provide secure storage for equipment. Use the slide-out locking shelf for projectors & adjustable inner shelf for computer & AV material. Adjustable shelf measures 24" wide x 17-1/2" deep. The lectern is equipped with wire-management grommets for easy cord management & four heavy-duty hidden casters for easy movement from one presentation location to the next. Two casters lock for a stability. Design includes high-quality laminate heat-fused with stained pine wood finish, radius corners, skirted base & rounded top sculpted top profile.