In-ear wireless earphones, convenient with a charging case. - Brand: nwm - Package type: Paper - Color: Black - Charging case: Included - Design: Open-ear Thank you for viewing. I received these as a company gift, but I already have earphones, so I'm selling them. Regarding the performance, you can search "nwm earphones" on Amazon, etc. I am also open to price negotiations, so please feel free to ask.