Bose Noise Canceling Shark Headphones. I lost my left earphone. After-sales service cannot support the replacement of another earphone. I can only buy a new one. How can I protect my rights?

This design seems to mean that you cannot replenish a single one, you can only get a new pair. I should have told you when you purchased it that you can call 315 to protect your rights, but it should be useless.

BOSE’s newly launched true wireless noise-canceling headphones; compact and stylish design and portable storage box are convenient for you to carry on daily trips; advanced shark fin silicone ear tips make wearing more comfortable, fitting and stable .

Dynamic balanced design ensures consistent sound quality.

The 11 noise reduction levels refine the noise reduction effect and truly achieve "quiet music can shine".

Three levels of rapid noise reduction adjustment can handle scene switching with ease.

Capacitive touch makes operation more intuitive and convenient.

The wireless charging charging box supports wireless charging.

Calling voice assistant supports Siri, etc.

Bluetooth 5.1 data transmission is more stable.

Other aspects:

The difference between the Bose Shark and the Bose Shark is that the Bose Shark has a noise cancellation function, while the Bose Shark does not have a noise cancellation function. The Bose Shark battery lasts up to about 6 hours and supports USB-C charging cable or Qi-certified wireless charging pad. Bose Dynamic Sound Equalization technology automatically enhances bass and treble, delivering clear audio and deep, rich bass.