5W An advanced custom speaker unit releases powerful sound, and consistently high level of sound, without distortion, you'll be impressed with the sound from such speaker A115.Bass radiator is fixed on the bottom of mini speaker, you can feel surprisingly stong bass with air pressure system's help, you'll like heavy bass bring a sense of the kind of release.Bluetooth V5.0-connect in just a few seconds over A115 to your , Smartphone, and Tablet; TF Card function(up to 32GB)-supports multiple music playback modes.Built in 6000mAh Battery, Can Play About 40 hours A Single Charge. Dancing LED when , 5 LED Level Shows 20% of Battery. Clearly know the status of Power Left.True wireless stereo technology allow two speakers sync each other through Bluetooth and from left and right channel(This one speaker). Each bluetooth speaker can also be used separately.Bluetooth distance: 10mPower output: 5W x 2Resistance: 4 ohmSpeaker size: 40mmBandwidth: 100HZ-18KHZDistortion: less than 0.5%S /N greater or to 85DBcolour: silverMaterial: metalsize: 48x48x108MMPackage Contents:1 x Bluetooth Speaker1 x Charging CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.