M2S Hanging Neck Bluetooth Universal In-Ear Sports Wireless Headphone (Bluetooth + 3.5mm Line with Microphone)

1. Four moving coils
2. Comes with a 8g souvenir.
3. Two-sided 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: Hanging from the neck.
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