Check the listing for details. Bluetooth Karaoke Microphones Wireless Speakers Duet w/ Echo LED Lights 2pc. Color: Multicolor, Condition: Open box, Made in China. Listed at 28.00 USD. New, Open Box ~ Tested Pair 2 units simultaneously for duets Portable Bluetooth speaker with Microphone Lighting effects sync with your singing Microphone volume and Echo controls Li-ion rechargeable battery Line in jack to connect your audio device (Devices sold separately) Ideal for singing and sharing singable moments, the Singing Machine 2-Pk. Duet Portable Bluetooth Speaker with Microphone lets you sing together with a friend or family member. These truly portable 2-in-1 Bluetooth Microphones with Speakers pair together so two people can sing the night away! Lights sync as you sing while Echo controls give your voice a unique effect. Bring the party with you–you set the scene, we bring the fun!.