1. Bluetooth version: V5.4 2. Battery capacity: 45mAhx2 for earphones, 400mAh for charging case 3. Transmission frequency: 24Ghz 4. Charging time of earphones: about 0.5h 5. Receiving distance: 10m 6. Charging time of earphone case: about 1.5h 7. Waterproof grade: IPX4 8. Transmission distance: about 10m 9. ANC active noise reduction, ENC call noise reduction 10. Dual omnidirectional microphones, ultra-low frequency noise reduction 11. 360-degree panoramic stereo, natural spatial sound 12. Ergonomic design, comfortable to wear 13. Instant flash charging, charging for 10 minutes and listening to music for 2.5h 14. Hall switch is more portable and easy to operate with fingertips
