ΑΚΟΥΣΤΙΚΑ Bluetooth XO-X8 TWS double earphone Black

¦New Bluetooth 5.0, Blue Xun 5616 Bluetooth solution
¦ Bluetooth effective distance ? 10m
¦The best call distance within 10m
¦Headset maximum power 5mW
¦Headset amplifier type: chip built-in
¦ Audio signal-to-noise ratio: S/N ?90dB
¦ Frequency response:50Hz~20KHz
¦ Speaker unit: Φ6mm 32ohm titanium membrane dynamic coil
¦Built-in battery: lithium battery: headphones: 3.7V / 25mAh rechargeable base: 3.7V / 450mAh