Universal compatibility ?C compatible with [aftershokz aeropex as800] [aftershokz opencomm asc100sg] stereo bone conduction earphones. Please check your headset model before purchase. Magnetic charging port ?C the magnetic connector helps to plug the plug into the headset for a fast and safe connection. It is more convenient to connect with the headset and the charging is stable. Safe and fast charging - designed and manufactured only with high-quality materials, it can withstand at least 10000 times of plug-in life after testing. Built in short circuit and overload protection to provide you with stable and safe charging. Plug and play ?C charger cable charger design with USB port. You can charge your device by plugging in your laptop, PC, MAC, laptop USB port. It is recommended to buy 2, one at home and one in the office!