M9 Bluetooth 5.1 Business Style In-ear Stereo Wireless Bluetooth Earphone(Black)

1. Bluetooth version: 5.1 2. Bluetooth distance: 10 meters 3. Talking/listening time: about 10 hours 4. Epoxy button, comfortable hand feeling 5. After connecting one ear to the mobile phone, turn on the other earphone and double-click the button. After 3 seconds, it will be automatically paired. 6. Big diaphragm loudspeaker sounds, HIFI high-fidelity sound effect 7. Waterproof design, effectively prevent sweat from damaging components 8. The recessed design on the side makes the earphone not easy to fall when holding it with your fingers 9. Ergonomic design, comfortable to wear Note: buy two can be paired into a pair for use