Charging function: we offer a USB charger so you don't have to buy batteries. Use the power switch to easily turn the device on/off. Adjust the volume by simply touching the button without tools. And it can be charged anywhere there is a USB socket, e.g. on company computers, home sockets, etc.Lightweight and small: the machine itself is ultra-low background noise and ultra-light weight body, you won't even feel its presenceDigital sound amplifier: advanced digital signal processing technology provides a high quality of natural sound, detects and identifies sound waves and changes the amplification of the channel in which the noise is located to make normal speed clearer.Gift Wrapping In addition, we will give you a box with charging function so that you can charge anywhere, but the charging box can only be used for auxiliary charging, plus we have different sizes of earbuds for you to change.GuartczDColourREDStyleOver The EarPower sourceBattery PoweredSpecial featureLightweight, Rechargeable

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