<p>1. Once Fully , You Can Listen For 14 Hours. Built-In 250mAh Lithium Battery, Which Can Be Used Wirelessly When Fully . It Can Be Used While Charging When The Battery Is Low.</p> <p>2. The Eye-Protecting Light Ring Refuses Blind Insertion. The Working Status Is Clear At A Glance. It Is Eye-Catching And Not Dazzling. It Is More Convenient To Use At Night.</p> <p>3. Install The Bluetooth Function On The Tv And Connect The Bluetooth Headset</p> <p>4. Turn Wired Into Wireless, A New Music Experience, Connect Old Speakers, And Easily Transform Into Bluetooth Speakers</p> <p>5. High-Definition Music, Listen To Music All The Way, Hands-Free Calls, Free Your Hands, Car Audio, Turn Into Bluetooth Audio In Seconds, Listen To Mobile Music All The Way</p> <p>1.Model: ET-BR04</p> <p>2.Bt Version:5.3</p> <p>3. Output Interface: 3.5mm Stereo Interface</p> <p>4. Frequency Response: 50~200HZ</p> <p>5.Battery Capacity: 250mAh</p> <p>6. Transmission Distance: 10-15m</p> <p>7. Charging Port: USB-C</p> <p>Note:</p> <p>Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use</p> <p>Colour:As Shown</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 x AUX Car Bluetooth Receiver</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>