Brand new, never opened - was a well intentioned gift by someone. Asking $135 (This is a reposting, I went out of town, but am back) Sells for $179 on Apple. Features Custom high-excursion Apple driver Custom high dynamic range amplifier Active Noise Cancellation Adaptive Audio4 Transparency mode Conversation Awareness Voice Isolation Personalized Spatial Audio with dynamic head tracking Adaptive EQ Vent system for pressure equalization Battery: Up to 4 hours of listening time on a single charge with Active Noise Cancellation enabled Up to 5 hours of listening time on a single charge with noise control off AirPods 4 with Active Noise Cancellation and Charging Case (USB‑C) Up to 20 hours of listening time with Active Noise Cancellation enabled Up to 30 hours of listening time with noise control off 5 minutes in the case provides around 1 hour of listening time Cool feature: Live Translation! Works on AirPods 4 with Active Noise Cancellation when paired with an Apple Intelligence–enabled iPhone running iOS 26 and later. Available in beta with support for these languages: English (UK, U.S.), French (France), German (Germany), Portuguese (Brazil), and Spanish (Spain). Later this year, Live Translation on AirPods will add language support for Chinese (Mandarin, Simplified), Chinese (Mandarin, Traditional), Italian, Japanese, and Korean.