Bluetooth version: BT V5.3 2. Transmission distance: about 10m 3. Standby time: 7 days 4. Playing time: about 11h 5. Charging time: about 2h 6. Product weight: about 26g 7. Output power: 8mW 8. Rated power: 5mW 9. Bone conduction technology, non-in-ear wear, truly liberating both ears 10. Ergonomic design, stable and not easy to fall off 11. Comes with 32G memory, you can listen to music freely without a mobile phone 12. Life-level anti-sweat, hidden sealed charging design, no fear of sweat and rain Packing list: - Earphone x 1 - Data cable x 1 - User Manual x 1