Designed for use with Oklahoma Sound® lecterns. The wireless configuration allows for a 200-ft range to roam. Great for schools, meeting rooms and auditoriums. • Designed for use with Oklahoma Sound® lecterns. • Great for schools, meeting rooms and auditoriums. • Headset design. • Wireless configuration gives you the freedom to roam. • Can be operated on two different channels to avoid signal interference. Oklahoma Sound®'s Wireless Headset Mic is designed for use with OS® lecterns. The wireless configuration allows for a 200-ft range to roam. Great for schools, meeting rooms and auditoriums. Maximum Wireless Range: 200 ft; Mounting Details: Headset; Power Source(s): Battery; Batteries Included: No.