Bluetooth audio receiver:Enjoy a stable connection with improved range and efficiency, enhancing your audio experience while reducing latency.It can make music stream to those speakers/car/home stereo systems which without bluetooth. Bluetooth audio splitter:Elevate your karaoke experience! It incorporates advanced vocal cancellation that effectively removes or significantly reduces vocals from your favorite songs. You can sing along with the background music, perfect for parties 3.5mm Aux input: Wide compatibility with most devices with 3.5mm audio jacks Advanced Bluetooth 5.3 Technology: Enjoy a stable connection with improved range and efficiency, enhancing your audio experience while reducing latency. 6-10 Hour Battery Life:Built-in 360mAh rechargerable battery,after full charging,can keep working within 6-10 hours. Transform Your Listening Experience with Our Bluetooth Audio Receiver! Dive into your favorite music like never before! Our cutting-edge Bluetooth audio receiver features a vocal cancellation function, allowing you to customize your listening experience. With two adjustable levels-25%and 100%-you can easily tailor the sound to suit your mood.Bluetooth audio receiver function,make the wired speaker/headphone work like"wireless,connect mobile phone/tablet via Bluetooth,3.5mm aux adapter connect the spealer,headphone or amplifier to Parameter: Battery:360mAh Working time:10h Charging time:2H Charging port:Type-c Color: Black Material: plastic Package Contents: 1 set of Bluetooth 5.3 audio receiver 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.