1. Comfortable to wear, not easy to drop 2. One touch control, simple operation 3. Directional binaural dual microphones, clear call 4. Control the single ear switch at any time, seamlessly switch the wearing mode 5. Bluetooth pairing name: C1 6. Bluetooth version: 5.0 7. Earphone speaker: F8 true copper ring 8. Headphone material: plastic & PC 9. Headphone battery capacity: 50mAh 10. Storage box battery capacity: 2200mAh 11. Transmission distance: 10-15 meters 12. Talk time: 4-5h 13. Playing time: 4-5h

http://olla.gr/m8-bluetooth-5.0-tws-touch-digital-display-true-wireless-bluetooth-earphone-with-charging-box-black/