2. Bluetooth version: JL7003D V5.3

3. Bluetooth protocols: HFP, HSP, A2DP, AVRCP, PBAP

4. Bluetooth distance: less than or equal to 10m

5. Speaker size: 13mm

6. Noise reduction depth: -35dB

7. Frequency response range: 20Hz-20kHz

8. Microphone sensitivity: -42+/-dB

9. Listening to music/call time: about 4 hours (ANC off), about 3 hours (ANC on)

10. Battery capacity: 3.7V/25mAh x 2 for earphones, 3.7V/300mAh for charging case

11. Charging time: about 1H for earphones, about 2H for charging case

12. Charging interface: Type-C

13. Small and mini, easy to carry

14. ANC noise reduction technology, comfortable to wear

15. Using Bluetooth 5.3 chip, low latency, stable transmission

16. Compatible with a wide range of Bluetooth devices, easily switch between smartphones, tablets and laptops.