1. Transmission range: 10 meters.
2. Functions: Battery display, call function, NFC function, voice control, music support, multi-point connection.
3. Bluetooth protocol: 5.0
4. Channel: stereo.
5. Whether single or double ear: bilateral stereo
6. Battery: 3.7V/11 MA lithium battery
7. Charging time: 2 hours.
8. Talk time: 8 hours.
9. Weight: 42 grams.