i7s tws мини наушники беспроводная связь bluetooth наушники-вкладыши наушники близнецы наушники наушник с зарядки коробка микрофон для andro

1. driver: 15mm 2. impedance: 32 ohm 3. bluetooth version: bluetooth v4.2 + edr 4. bluetooth use band: 2.4ghz 5. power level: class ii 6. output power: 30mw 7. bluetooth distance: 10 meters barrier 8. frequency response: 20-20000hz 9. operating voltage range: 3.0v-4.2v 10. mic sensitivity: -42db 11. with a2dp avrcp high quality stereo audio transmission and remote control protocol 12. talk time is about 4-5 hours 13. music time about 4-5 hours 14. standby time is about 100 hours