Check the listing for details. TopTech Bluetooth Portable Karaoke System, Rechargeable, LED Lights, 2 Mics. Color: Black, Multicolor, Condition: New. Listed at 17.00 USD. The TopTech Bluetooth Portable Karaoke System is a versatile and fun entertainment option for any event or gathering. With its sleek black design and multicolor LED lights, this karaoke system is sure to add a touch of excitement to any party. The included microphones and speaker provide high-quality sound for an immersive karaoke experience. The portable design and rechargeable battery make it convenient to use anywhere, without the need for a power source. With Bluetooth connectivity, you can easily stream your favorite music and sing along with friends and family.