1. Bluetooth version: 5.1 2. Bluetooth distance: 10 meters 3. Talk time: about 25 hours 4. Listening time: about 18 hours 5. Bluetooth can be converted to memory card to listen to songs 6. Neck-hanging design, comfortable to wear 7. The in-ear structure is designed with dual charging and noise reduction from the inside to the outside, which enhances the audio and offsets the environmental noise at the same time 8. The earphone adopts magnetic absorption so that it is not easy to fall 9. Widely compatible with Bluetooth-enabled devices

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