Digital Wireless Handheld Microphone System with One-step Setup, 2.4GHz Operation, Polycarbonate Construction, and Internal Antennas - 275 feet range - Frequency Response - 10Hz - 20kHz                      dynamic range -up to  118db     Frequency and Signal Diversity -   Battery    2 x AA / 8 hours 

XD-V35:         HandHeld system                               6-channel, 275ft range vocal wireless system with handheld transmitter

XD-V35L:      Wireless Lavalier system                    6-channel, 275ft range vocal wireless system with body pack transmitter and lavaliere.