Apple AirPods 4 with noise isolation

Features: custom engine with high expansion designed by Apple, custom high dynamic range speaker amplifier, adaptive sound feature, transparency mode, speech awareness, custom spatial sound with dynamic head tracking, adaptive sound balancing, air vent system for pressure balancing. Specifications: sweat, dust, and water resistant, dual microphone with beamforming technology, directional microphone towards the ear, dual optical sensors, motion-detecting accelerometer, speech-detecting accelerometer, pressure sensor, long-lasting battery.