1.Level 1. IPX7 waterproof
2.7000 mah super capacity for mobile phone charging.
4. The latest update of 1532 chip bluetooth 5.0, transmission more stable, power consumption as low as 8mA
5. Simple but not reduce: one button to pause/play/answer/hang up, three strokes to start siri, double click on the song, play music state long press volume plus or minus, pause play music state long press 8 seconds shutdown
6. Intelligent breathing lamp (controllable switch)
8. Independent sound cavity, 6MM titanium membrane speaker, high voice reduction, thick and powerful low frequency, high and clear middle and high frequency
10. LED digital display of battery quantity in charging bay
11. Most consistent with the structure of human cochlea, comfortable to wear