This speaker is with blue light or colorful light, actual light color will be more bright and cool.USB power supply, Energy-saving and environmentally-friendly, Safe and reliable.Superior sound quality, Enjoy your music through dual high-performance loudspeaker.Steady and undistorted bass sound effect with stereo sound surrounding.Aesthetic and exquisite design, lightweight and portable, convenient to carry.Wide compatibility with desktop PC, laptop, DVD, TV, cell phones, tablet and other audio devices.Item Name: bluetooth-compatible SpeakerCase Material: WoodConnection Method: Bluetooth, TF Card, AUX ConnectionTransmission Range: 10m/393.7" (Approx.)Working Voltage: 3.7VFrequency: 30HZ-18KHZSignal-to-Noise Ratio: 80dbDistortion: ≤0.5%Sensitivity: 80dbCharge Method: USB ChargeCharge Voltage: USB DC 5VPlayback Format: MP3, WMA, AFE, FLAC, WAVControl Way: ButtonsFeatures: Mini Size, Universal, bluetooth-compatible Connection, Bass Sound, Colorful LightMain Speaker Size: 15.4cm x 12cm x 16cm/6.06" x 4.72" x 3.60" (Approx.)Small Speaker Size: 7cm x 7cm x 10.5cm/2.76" x 2.76" x 4.13" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Main Speaker2 x Small Speakers1 x User Manual