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 tiny speaker A115. radiator is fixed on the bottom of mini speaker, you can feel surprisingly stong with pressure system's help, you'll like heavy bring a sense of the kind of release.Bluetooth V5.0-connect in just a few seconds over A115 to your , Smartphone, and ; 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 play music, 5 LED Level Shows 20% of Battery. Clearly know the status of Left.True wireless stereo technology allow two speakers sync each other through Bluetooth and play music from left and right channel(This price only for one speaker). Each bluetooth speaker can also be used separately.Bluetooth distance: 10m output: 5W x 2Resistance: 4 ohmSpeaker size: 40mmBandwidth: 100HZ-18KHZDistortion: THD less than 0.5%S /N greater or equal to 85DBcolour: silverMaterial: metalsize: 48x48x108MMPackage Contents:2 x Bluetooth Speaker2 x Charging CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.