We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. 60th Anniversary Model Limited Diamond Collection is now available Quiet and immersive, BOSE's best headphones ever: World-class noise canceling, revolutionary spatial audio that delivers more immersive sound regardless of content or sound source, and a higher-grade design using luxurious materials. . Additionally, CustomTune technology automatically analyzes the shape of your ears and optimizes the sound performance of the QC Ultra Headphones to match your ear shape, creating a customized sound experience. The world's best over-ear noise canceling headphones: even better active noise canceling than previous products. Use Quiet Mode when you want to focus on your work or music without being disturbed. If you want to enjoy content while paying attention to your surroundings, switch to Aware mode. You can hear your surroundings and have a conversation without removing the earcups. Immersion mode allows you to enjoy immersive audio with full noise cancellation. Clear and natural call voice: Achieve stress-free calls without being heard back. An innovative microphone system focuses on your voice while filtering out background noise, giving you and the other party a call that's incredibly clear. Elevated Design & Luxurious Comfort: Modern, sophisticated and stylish design. A cushion that gently hugs your ears. Headband that evenly distributes pressure on your ears. We then added sleek metal arms to add a touch of sophistication to the design. Bluetooth Wireless Headphones: Advanced Bluetooth 5.3 provides a powerful and stable connection within 30 feet of your paired device. Bose SimpleSync technology also syncs sound from your QC Ultra Headphones and Bose Smart Soundbar, allowing you to watch TV at a different volume than those around you and enjoy quiet entertainment without disturbing the person sleeping next to you. can. Long-lasting playback: QC Ultra Headphones provide up to 24 hours of playback on a single charge (up to 18 hours with immersive audio). If you want to charge quickly, a 15 minute quick charge will give you up to 2.5 hours of playback (up to 2 hours with immersive audio). Easy access to music: Intuitive touch controls on the button or ear cup let you play/pause music, adjust volume, and switch modes and tracks. You can also answer calls without taking out your smartphone.