Rack mountable design matches front surround systems and micro component systems Advanced YST (Yamaha Active Servo Technology II) Down-firing active design. 30 -150 Hz low frequency response

✔PORTABLE WIRELESS SPEAKER-- Bluetooth 4.2 automatically pairs to your device within seconds. Built-in large audio drivers offer full high-definition stereo sound and the rear-facing subwoofer provides enhanced bass. ✔GORGEOUS LED LIGHT -- 60 LEDs, each LED flickers warm yellow lights, forming a stunning flame, mimic extremely realistic & natural dancing flames,combined with audio function, to create a romantic atmosphere for you. ✔HIGH-QUALITY -- Product Dimensions: 3.9" (L) x 3.9" (W) x 6.5" (H); Made of high-duty ABS plastic, it has a standard tripod threaded hole at the bottom of speaker to connect to tripod(tripod not included), normally can be used at least 2 years.