<br>Upgraded Bluetooth 5.0 Stereo Sound Quality with Optimized EQ <br>Upgraded Wireless Coexistence - Never disconnects, works well in saturated RF Environment <br>Extended Battery Life:Up to 24 Hours of use <br>Flexibility: Both Earbuds simultaneously or individually for Music and Calls you decide! <br>How to Use Multifunction Button? <br>Previous Song: Long press L Multifuction Button 2s <br>Next Song: Long press R Multifuction Button 2s <br>Play / Pause: Short press Multifuction Button <br>Pick up / Hang up phone call: Short press Multifuction Button <br>Decline Incoming call: Long press Multifuction Button 2s <br>Activate / Disable Siri: Double-press the Multifunction Button