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2. Volume up and down
3. Bluetooth 5.0 transmission is more stable, faster, and lower power consumption
4. Easy to control: one button pause / play / answer / hang up, double click to start siri / hang up, long press 2 seconds up and down
5. Intelligent breathing light (controllable switch)
6. Open the cover and get rid of the manual, automatic boot pairing back
7.2200mAh large capacity of charging box,can Charge the phone