KZ B High Fidelity Stereo Bluetooth Upgrade Cable for KZ ZST / ED12 / ES3 / ZSR / ZS10 / ES4 Earphones

1. KZ custom Bluetooth module upgrade line, let you leave all the constraints and enjoy the experience. 2. Compatible with ZST / ED12 / ES3 / ZSR / ZS10 / ES4, second-order high-end version of Bluetooth sports headphones. 3. Can be turned on/off, Bluetooth pairing, answering/rejecting calls, playing/pausing music, etc. 4. Bluetooth version: 4.2. 5. Communication distance: 10m. 6. Pin type: 0.75mm. 7. Running time: about 3-4 hours, charging time: about 1.5 hours. 8. Housing material: ABS. 9. Weight: 6-12g. 10. Wire length: 59-65cm.