Movo WMX-1-DUO 2.4GHz Dual Wireless Lavalier Microphone System. Includes two transmitters and lavalier microphones. Model: 2.4Ghz Lavalier Wireless System. Lavalier Mic Specs. This universal wireless lavalier microphone system significantly improves your audio quality whether you use it with a standard smartphone/tablet or the highest-quality DSLR.