Make sure this fits by entering your model number. Bundle Includes: Sony WH-1000XM4 Wireless Noise Canceling Over-Ear Headphones (Black), and Sony WI-SP500 In-Ear Sports Wireless Headphones (Black) Edge-AI: Using Edge-AI (Artificial Intelligence) co-developed with Sony Music Studios Tokyo, DSEE Extreme (Digital Sound Enhancement Engine) upscales compressed digital music files in real time. Dynamically recognizing instrumentation, musical genres, and individual elements of each song, such as vocals or interludes, it restores the high-range sound lost in compression for a richer, more complete listening experience