The advanced 5W speaker releases powerful sound and consistently high sound level, without distortion, you will be impressed by the sound of such a speaker A115. The bass radiator is fixed on the bottom of the mini speaker, you can feel the surprisingly stong bass with the help of the air pressure system, you want, heavy bass give the feeling of this kind of release. Bluetooth V5.0-connect in seconds via A115 to your smartphone and tablet; TF Card Function (Up to 32GB)--Supports multiple playback modes. Built in a 6000mAh battery, it can play about 40 hours on a single charge. Dancing led when level 5 LED shows 20% battery. Clearly know the status of power to the left. True wireless stereo technology allows you to synchronize two speakers via Bluetooth and from the left and right channels (this one speaker). Each bluetooth speaker can also be used separately. Bluetooth Distance: 10mOutput Power: 5W x 2Resistance: 4ohm Speaker Size: 40mm Bandwidth: 100HZ-18KH Distortion: Less than 0.5%S/N greater or up to 85DBColor: Silver Material: Metal Size: 48x48x108mm Package Contents:1 x Bluetooth Speaker1 x Charging CableOnly the above package contents, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.