The Go Mic Mobile Beltpack Transmitter is the perfect addition to any Samson Go Mic Mobile system. While the system comes with a single transmitter, the dual-channel receiver is designed for a second. With an additional Go Mic Mobile Beltpack transmitter, you can capture the sound of your stories without cables. The Go Mic Mobile Beltpack Transmitter features the Samson omnidirectional lavalier microphone LM8, which comes with a clip for optimal microphone placement and a windscreen to reduce plosive sounds and other unwanted noises. The transmitter also offers uncompressed digital wireless operation up to 100 feet (line of sight) for up to 20 hours using two AA batteries.