1. Bluetooth version: 5.02. Material: ABS+PC3. Battery capacity: earphone 30mAh, charging compartment 300mAh4. Charging time: about 1.5 hours5. Standby time: 100 hours6. Talk time: 4 hours7. Music time: 4 hours8. Bluetooth distance: 10 meters9. Support APTX lossless sound quality10. Master-slave switching, can be used in one ear11. Low power consumption, support long time use12. Intelligent control, easy to use13. Ergonomic design, comfortable to wear and firm

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