F6 Auricolare Bluetooth Mini Invisible Ear Business Display digitale Auricolare (Nero)

1. Bluetooth version: 5.2 2. Battery capacity: 120mAh 3. Frequency: 40Hz-20KHz 4. Transmission distance: about 10 meters 5. Use time: about 68 hours for talking, about 30 hours for listening to songs 6. Charging time: about 1 hour 7. Impedance is: 32 ohms 8. Sensitivity: 85dB 9. Waterproof grade: IPX 5 10. Charging interface: Micro USB 11. Weight: about 5 grams Features: 1. Intelligent digital display battery 2. Effectively suppress noise and make calls clear 3. Can connect two mobile phones at the same time 4. One-key control, universal for left and right 5. USB charging, portable and universal, safe, stable and fast 6. IPX5 waterproof, prevent the intrusion of rain and sweat 7. Fast and stable connection, high performance, low power consumption