Bose QuietComfort Ultra Earbuds Completely Wireless Noise Canceling Earbuds Spatial Audio Bluetooth Connection with Microphone Up to 6 Hours Playtime

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Bose Immersive Audio: Bose immersive audio (spatial audio) pushes the boundaries of listening. Creates an immersive listening experience that makes you feel as if the sound is unfolding right before your eyes. You will feel as if you were sitting in the VIP seats at a concert venue. Enjoy an unprecedented listening experience that feels like you can reach out and touch it. CustomTune Technology: This technology analyzes the shape of your ear and optimizes sound and active noise cancellation to match that shape, delivering world-class noise cancellation and customized sound performance. Customize your fit for all-day comfort: Choose from nine combinations of ear tip and stability band sizes to get the perfect fit. The soft umbrella-shaped tip seals the ear opening, reducing external noise. The stability band fits snugly around your ears, creating a comfortable fit. 3 listening modes: Quiet mode when you want to shut out surrounding noise and concentrate on music or work. Experience world-class noise canceling. If you want to enjoy content while paying attention to your surroundings, switch to Aware mode. You can listen to surrounding sounds and have a conversation without removing the earphones. Immersion mode allows you to enjoy immersive audio with full noise cancellation. Long-lasting: QC Ultra Earbuds alone provide up to 6 hours of playback (up to 4 hours of immersive audio). Additionally, you can fully charge it up to 3 times with the included case. And when you're short on time, just put the earbuds in the case and enjoy up to 2 hours of music with just 20 minutes of charging. Clear calls & easy operation: Realize stress-free calls without being heard back. Noise canceling microphone focuses on your voice. Eliminates ambient noise for incredibly clear calls. You can also play and pause music, change volume, and switch tracks with simple touch controls on the earbuds. You can answer calls and switch modes without taking out your smartphone.  Works great with just one earphone: You can use both or one earphone for calls and playback, depending on the scene and mood. Hands-free and hassle-free switching: Bluetooth multipoint provides seamless, uninterrupted listening. Easily switch between your phone, laptop, and other devices so you never miss a moment.