Bose Ultra Open Earbuds 空間オーディオ イヤホン オープンイヤー 完全 ワイヤレス Bluetooth接続 マイク付 最大7.5時間再生 防滴 ホワイトスモーク

## Bose Ultra Open Earbuds Review: Premium Open-Ear Sound Without Compromise The Bose Ultra Open Earbuds represent a bold new approach to personal audio, combining Bose's renowned sound quality with an open-ear design that keeps you connected to the world around you. Available in an elegant White Smoke colorway, these earbuds challenge the notion that you need to block out the world to enjoy great music. ### Design and Comfort The Bose Ultra Open Earbuds feature a distinctive clip-on design that attaches to the ear rather than sitting inside the ear canal. The joint mechanism is flexible and ultra-lightweight, making them remarkably comfortable for extended listening sessions. Simply hook them onto your ear and you're ready to go — no ear tips to fuss with, no pressure in your ear canal. The White Smoke color option gives them a sleek, jewelry-like aesthetic that works as a fashion accessory as much as an audio device. ### Sound Quality and Spatial Audio Despite their open-ear form factor, the Ultra Open Earbuds deliver impressive audio performance thanks to Bose's proprietary OpenAudio technology. This technology enables high-quality private sound without the need for an ear seal, which is genuinely impressive from an engineering standpoint. The earbuds also support Bose Immersive Audio, delivering spatial audio that creates a three-dimensional soundstage around you. Music feels more enveloping and realistic, as though you're surrounded by the performance rather than simply listening through speakers near your ears. ### Staying Connected to Your Surroundings The core appeal of these earbuds lies in their open-ear design, which allows ambient sounds to pass through naturally. Whether you're commuting and need to hear transit announcements, working in an office and want to remain approachable, or exercising outdoors and need situational awareness, the Ultra Open Earbuds let you enjoy music without disconnecting from your environment. This makes them ideal for "passive listening" throughout the day. ### Battery Life and Durability Battery life is rated at up to 7.5 hours of continuous playback in standard mode, which is solid for daily use. However, it's worth noting that enabling Immersive Audio reduces this to approximately 4.5 hours. The included charging case provides an additional 19.5 hours of playback, bringing the total to roughly 27 hours before you need to find an outlet. Standby time is rated at up to 48 hours. The earbuds carry an IPX4 rating for splash and sweat resistance, making them suitable for workouts and light rain. An acoustic mesh helps keep moisture and dust at bay, protecting the internal components. A built-in microphone enables hands-free calls via Bluetooth connectivity. ### Pricing Currently priced at ¥36,000 on Amazon.co.jp, the Bose Ultra Open Earbuds sit in the premium tier of the open-ear earbuds market. The price reflects the advanced OpenAudio technology, spatial audio capabilities, and the Bose brand's commitment to audio excellence. ### Final Verdict The Bose Ultra Open Earbuds are a compelling choice for anyone who wants to enjoy quality audio without sacrificing awareness of their surroundings. The combination of Bose's spatial audio technology, comfortable open-ear design, IPX4 durability, and respectable battery life makes them a versatile companion for virtually any daily scenario. If staying connected to the world while enjoying rich, immersive sound is your priority, these earbuds deliver on that promise.