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, Ambient Sound Mode, Sound Quality Adjustment, Automatic Power On, Automatic Power Off, 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 The sound cannot be heard properly because it was washed. Therefore, please purchase only if you can repair it or understand it as a junk item. Returns are not accepted after purchase, so please understand.