Original Lenovo X3 Magnetic In-Ear Wireless Sports Bluetooth 5.0 Earphone(Red)

1. Bluetooth working distance: 15m 2. Speaker size: 10mm 3. Speaker impedance: 32ohm 4. Speaker frequency response: 20Hz-20KHz 5. Battery charging current: 110mA 6. Battery capacity: 80mAh 7. Battery charging time: 2h 8. Working voltage: 3.3V-4.2V 9. Headphone size: 23.6×16.5×26.7mm 10. Earphone weight: 21.2g