- Compatible for smartphones, cameras, camcorders, audio recorders, tablets, and other audio/video recording devices. - The omni-directional polar pattern provides excellent off-axis response, even if a subject turns their head while speaking. - Excellent for interviews, the dual omni-directional lavalier microphones can record two sound resources at the same time. - Improved sensitivity and signal-to-noise. 4m(13ft) length cable allows you to use in various situation. - Rugged Metal Power Pack. Includes carrying pouch. - No need to install battery when using the microphone with a smartphone or a laptop.