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Oops Mini Smallest Invisible Wireless Bluetooth Headphones Headset Earphones Earbuds with Mic For iPhone iPad Samsung and Most Bluetooth Smartphones Perfect for Using at Work Office

Built-in DSP audio processing system, can be a very good eliminate Noise and echo, to ensure clear communication, and music
Bluetooth version:V4.0 + EDR. Can talk, listening to music
Small and light, stealth design
Battery type:50mA rechargeable lithium battery
2 in a row, to the telegraph, voice prompt operation