Electro BT Bluetooth Light Up LED Portable Rechargeable Speaker with Pulse Lighting 10 Mode Technology (Blue) Light Up PULSE LED Lighting technology, Electro BT Speaker changes lights with your devices equalizer 30 foot Bluetooth portable technology connect to any smart device. Rechargeable lithium-ion battery, comes with USB cable. Great quality sound, comes with AUX line-in-audio cord. Measures approximately 3-1/8"Diam x 3"H; weighs 5.3 oz