[HD Sound Quality] Built in high definition microphone, through dual noise reduction processing, to achieve high definition wireless calls, practical and useful.[Even Sound] By adjusting the grid distribution density, the sound of this BT speaker is evenly released without any impurities, which gives you a good using experience.[Exquisite Workmanship] With exquisite workmanship and small size, the speaker is easy to carry, can be placed in the home, office or car and other places.[Long Battery Life] The BTspeaker has a built in large capacity battery, which allows you to listen for 4 to 6 hours on a single charge, and the music is uninterrupted.[Wireless Connection] This BT wireless speaker has stable connection, output power 3W, signal to noise ratio 85dB, frequency response range, 100HZ20KHZ.