1.Bluetooth 5.3 audio mitter,built-in Blutooth 5.3 version chip ,stable and faster connection,compatible with mobile phone,tablet,TV,computer ,speaker ,headphone and other devices, mitter mode support imt the signal from TV,computer to Bluetooth headphone or speakers. 2.Support LC3,,ACC,,-LL,-HD,-AD audio codec,boasting high fidelity CD quality stereo sound streams seamlessly 3.Support Auracast(Broadcast audio) audio,under broadcast mode,nlimited auracast-enabled headphones or speakers can be connected in this mode. 4.With 3.5mm,Coaxial,and Optical audio input,rich interface can work for different devices. 5.Built-in 1000mAh battery,long standby time.after full charging ,can keep working for 8-15 hours Compatible with all QCC3084 Bluetooth headsets or speakers. Bluetooth version:V5.3 Audio codec:/AAC//-LL/-HD/-AD/LC3 Mode:Bluetooth mitter+Auracast audio Battery:1000mAh Charging time:2.5H Working time:BT:15h/:8h Colour:Black Material:Plastic Package Contents: 1 x Audio mitter Only 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.