Product name: Voice-activated spectrum display Bluetooth speaker kit Operating voltage: DC 5V (5.5mmDC interface) Horn power: 3W*2 Shell size: 133x65x73mm Functions: 3.7-5V DC power supply auto , 3W+3W stereo Power amplifier, support Bluetooth, support power off memory, UP . Product features: Upgrade on the basis of comfortable speakers, increase -controlled spectrum display function, the effect is more selective, listen to music at the same time can enjoy the cool lighting effect. Colour:Photo Color Material:abs Package Contents: 1 set of DIY Bluetooth speaker kit (delivered in parts) 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.