[Refurbished] Sony WH-1000XM4 LM Wireless Noise-Canceling Headphones with LDAC, Amazon Alexa, Bluetooth, Hi-Res Audio, 30 Hours of Continuous

・Improved noise canceling performance thanks to an advanced algorithm. Cuts out 20%* more everyday noise than the previous model. The algorithm has been improved by adding a new, high-performance chip. Adapts to music, noise, and acoustic characteristics with high accuracy in real time. ・Further evolved high-quality sound design ~ DSEE Extreme ~ DSEE Extreme uses AI deep learning to analyze music in real time and upscale to the optimum sound. LDAC transmission sound source and DSEE Extreme upscaled sound source can also be adjusted to your preferred sound using the equalizer. ・Have a conversation [Speak to Chat] A function that lets in outside sound according to the situation without removing the headphones. [Adaptive Sound Control] Automatically switches between noise canceling and ambient sound mode according to the user's behavior. AI switches to preferred noise canceling or ambient sound mode according to the user's frequently visited places. ・Supports wearing detection function that stops music playback simply by putting on or taking off the headphones. A lightweight design and optimized side pressure/ear pad contact area ensure a comfortable fit even when used for long periods of time.