WM700DM wireless microphone is a 2 channel PLL UHF variable frequency system. – 32 Khz Digital Tone Pilot. – USB Power Adapter. – 823/832 or 512/562 Mhz (WM700DMA) frequency range. – 30 meter range. – Up to 4 simultaneous frequencies each band. – ABS case. – 2 x Handheld cardioid transmitters