I was using this until last week, but I'm selling it because I bought a new one. There are cracks and scratches on the case, so I'm selling it at a special price. I hope you can make good use of it. I will clean and disinfect it with wet wipes before listing. Wireless Stereo Headset WF-H800 (B) Black Brand: SONY Wearing style: Separate left and right, completely independent Structure: Sealed Color: Black Wireless/Wired connection: Wireless Headphone features: Microphone Wireless standard: 2.4GHz band wireless Bluetooth Bluetooth version: Bluetooth 5.0 Bluetooth codec: AAC SBC Drive system: Dynamic type Driver size (mm): 6.0 mm Charging port: USB Type-C Charging time: 1.5 hours Weight (g): 15.2 g