BOROFONE BW68 Extreme true wireless BT headset - black

1, Bluetooth 5.4, chip: JL AC6973 2. Battery capacity: charging case 300mAh, headset 30mAh; 3. Use time: 4 hours 4. Size: 57*48.5*28mm; Total weight: 44.5g 5. Support master-slave switching, up and down song switching, summoning Siri and other functions