Features Single-presenter/multiple-listener system ? expandable to multiple presenters/unlimited participants Completely portable ? no base station required Easy to use, push-to-talk functionality Frequency-hopping technology subject to less interference - offers greater reliability in an array of tour group applications. Four independent tour groups can be operating simultaneously within a range of up to 100 feet outdoors/200 feet indoors (in 1- or 2-way mode, depending on environmental conditions). Outside of this range, other groups can be in operation. Description Product Description One-way, wireless tour guide system in the 2.4 GHz band. For tour groups of up to 23 members. Enhances communication between tour guide and group. Helps overcome background noise and distance from the tour guide. The system can be used in factories, museums, tourist attractions, or bus tours. Group members have listen-only capabilities.