Brand new charging case. Airpods used for maybe a few months (I upgraded to different ones).
Model A2084:
Active Noise Cancellation (ANC) — reduces external noise by generating anti-noise.
• Transparency Mode — lets in some outside sound so you can hear your surroundings while listening.
• Adaptive EQ — automatically tunes audio based on ear-shape for best sound.
• Interchangeable Silicone Ear Tips — typically 3 sizes, for more secure and comfortable fit.
• Built-in Microphones & Sensors: dual beamforming microphones (for voice pickup and noise reduction), inward-facing mic, optical sensors (to detect when earbuds are in ear), motion-detecting accelerometer, speech-detecting accelerometer, and a force sensor on the stem to control playback / switch modes.
• Sweat and Water Resistance — rated IPX4 (resistant to sweat / light rain / splashes; not waterproof).