Voice Amplifier: The wireless lavalier microphone also supports magnetic suction, which can be easily adsorbed or clipped to the collar, eliminating the discomfort associated with traditional headset microphones, it greatly reduces the burden of teaching and provides flexibility for different speaking situations Dual Wireless Microphones:The personal voice amplifier contains two microphones, which can be replaced at for seamless battery life when used by a single person; when used by two people, the speaker receives two voices at the same time for multi-scene adaptation & Portable:this portable microphone and speaker is compact and easy to carry. Comes with an adjustable strap so you can wear it comfortably around your waist or sling it over your shoulder Great for teaching, training, coacher, tour guide, shopping mall, speech, outdoor singing, etc Color: Black Material: plastic Package Contents: 2 x Microphone 1 x Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.