1. Note: it is not necessary to ask if xx mobile phone is available, regardless of brand and model. It can be used with Bluetooth 2. Powerful upgrade of exclusive Edition: LED HD  true digital display (headset & charging compartment power at a glance) 3. F9 core upgrade: upgrade 5. 0 Bluetooth chip, take out the automatic power on, fast second connection 4. Upgrade of operation function: one key switch up and down music & volume adjustment & wake up Siri 5. Large capacity charging Cabin: it can store the headset for a long time & can charge the mobile phone & mobile phone bracket 6. Enjoy 9D Bass: enjoy hifi scene and 9D surround sound 7. Cvc8.0 intelligent noise reduction: no matter how noisy the environment is, it can give you a quiet ear 8. Strong compatibility: no matter the brand, no matter the mobile phone, no matter the model, it can be used with Bluetooth