Apple AirPods 4 アクティブノイズ キャンセリング搭載、ワイヤレスイヤホン、Bluetooth 5.3、ライブ翻訳、適応型オーディオ、外部音取り込みモード、パーソナライズされた空間オーディオ、USB-C充電ケース、ワイヤレス充電、H2チップ、防塵性能と耐汗耐水性能、「探す」対応、Qi充電

The Apple AirPods 4 with Active Noise Cancellation represents a significant evolution in Apple's wireless earbuds lineup. With a redesigned form factor, the powerful H2 chip, and a wealth of intelligent features, these earbuds aim to deliver a premium listening experience without the need for silicone ear tips. **Design and Comfort** Apple has completely redesigned the AirPods 4 with a refined silhouette and shorter stem. The result is a more compact, modern look that Apple claims provides all-day comfort with improved stability. Despite being an open-ear design without ear tips, these AirPods manage to incorporate Active Noise Cancellation — a noteworthy engineering achievement. **Active Noise Cancellation and Adaptive Audio** The standout feature of this model is its Active Noise Cancellation (ANC), powered by the H2 chip. ANC reduces external noise before it reaches your ears, allowing you to fully immerse yourself in your music or calls. The Adaptive Audio feature seamlessly blends ANC with Transparency mode, automatically adjusting to your environment for the optimal listening experience. The Conversation Awareness feature is particularly practical — it automatically lowers your audio volume when it detects you're speaking with someone nearby. **Sound Quality and Call Quality** Advanced computational audio delivers impressive sound quality. The Voice Isolation feature enhances call quality in noisy environments by reducing background noise and isolating your voice for crystal-clear communication. Personalized Spatial Audio with dynamic head tracking places sound all around you, creating a cinema-like experience for music, TV shows, movies, and games. **Battery Life and Charging** Battery life is rated at up to 4 hours with ANC enabled, extending to 20 hours with the charging case. With ANC turned off, total playback time reaches up to 30 hours. The charging case is touted as the smallest in its class for wireless charging-compatible models and supports USB-C, Apple Watch charger, and Qi wireless charging — offering exceptional versatility. **Additional Features** The AirPods 4 support Bluetooth 5.3, carry an IP54 rating for dust, sweat, and water resistance, and offer Live Translation capabilities. The Find My app can locate both the AirPods and the charging case. A unique interaction lets you nod for "yes" or shake your head for "no" to respond to Siri, and skin detection sensors ensure audio plays only when the AirPods are in your ears. **Verdict** Currently available on Amazon.co.jp at ¥23,798 (20% off the regular price of ¥29,800), the AirPods 4 with ANC offer compelling value. They are especially recommended for those who prefer an open-ear design without ear tips but still want active noise cancellation, and for users deeply invested in the Apple ecosystem.