Model No: BOOSTPLAY16 UPC: 692868167324 Brand: VOCOPRO Country of Origin: United States VOCOPRO DUAL WIRELESS MICROPHONE ANTENNA Four microphone set with antenna booster packageto extended the range up to 600 feet (line of sight) Four microphone set with antenna booster packageto extended the range up to 600 feet (line of sight) Up to four frequency groups so 16 microphones can be used together with multiple boosters. All-inclusive quad mic system includes two antennaboosters, power supplies, plug adapters, 8 ft. coaxial antenna cables, wall mount brackets, and antenna table stands