A1 Bluetooth Mini In-Ear Binaural Stereo Earphone(Black)

1. Bluetooth version: 5.1+EDR
2. Transmission distance: about 10 meters
3. Talk time: about 3 hours
4. Listening time: about 4 hours
5. Battery capacity of charging compartment: 500mAh
6. Headphone battery capacity: 40mAh
7. Wireless frequency: 2.4GHz
8. Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3
9. Charging voltage/current: 5V/1A
10. Power: 5W
11. Charging time: about 1 hour
12. Speaker/impedance: 8mm/32 ohm
13. Microphone sensitivity: -42dB
14. Charging compartment size: about 5x5x2.7 cm
15. Weight: about 31.6 grams

Features:
1. Using Bluetooth 5.1 processing chip, equipped with high-rate audio processing unit, high-definition decoding of sound details
2. Sleek curve, semi-open design, comfortable and stable to wear
3. 6mm large dynamic coil, HIFI lossless sound effect, clear treble/clear midrange/powerful bass
4. Bluetooth 5.1 dual-mode master-slave switching technology, seamless switching between single and dual ear modes
5. After the first connection, you can reconnect after opening the cover next time, easy to operate
6. Automatic smart pairing, touch operation, no mobile phone, just touch to complete various functions
7. Type-c interface, charging faster