Wireless Noise Canceling Stereo Headset WF-1000XM3 (B) Black Brand: SONY Wearing Style: Separate Left and Right, Completely Independent Headphone Type: Canal Type Construction: Sealed Color: Black系 (Black-based) Wireless/Wired Connection: Wireless Headphone Features: Noise Canceling, Microphone, External Sound Input, Sound Quality Adjustment, Automatic Power On Function, Automatic Power Off Function, Remote Control Wireless Standard: Bluetooth Wireless Function: NFC 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): 17.0 g I accidentally washed them and can't hear the sound properly. Therefore, please purchase only if you can repair them or understand that they are junk items. Returns are not accepted after purchase. Thank you for your understanding.