M2S Hanging Neck Bluetooth Universal In-Ear Sports Wireless Earphone(Bluetooth Memory Version)

1. Four moving coils
2. Comes with 8G memory
3. Bilateral stereo
4. Sensitivity: 98±2dB
5. Bluetooth version: V5.0
6. Transmission distance: ≤10 meters
7. Charging time: 2-3H
8. Standby time: 180 hours
9. Lithium battery: 3.7V/250mAh
10. Detachable and replaceable headphone cable
11. Mode of use: neck hanging
12. Listen to music for 30 hours without interruption
13. Bluetooth chip: Zhongke Lanxun 5335B
14. Bluetooth protocol: HFP, HSP, A2DP, AVRCP
15. Function: battery display, call function, NFC function, support music
16. Size: 20x16x3cm