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.