• 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

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Noted:Just Single Ear