Sony WH-1000XM4 Wireless Premium Noise Canceling Overhead Headphones – 30hr Battery Life, Over Ear Style with Mic for Phone-Call and Alexa Voice Control for Google Assistant – Black

Noise cancellation, powered by HD Noise Cancelling Processor QN1. Industry-leading noise canceling with Dual Noise Sensor technology,Specific uses for product Audio Frequency Response 4Hz-40,000Hz. Headphone Type Closed, dynamic. Frequency Response: 4 Hz-40,000 Hz
Sound quality – these Bluetooth headphones toughen ideal Resolution Audio, or even compressed music files are upscaled the use of evolved DSEE Extreme technology. As much as 30-hour battery life with quick charging (10 min charge for 5 hours of playback)
Speak-to-Chat mechanically pauses playback when one start a conversation, Wearing Detection powers off headphones when not wearing them, plus more smart features for a seamless, hands-free listening enjoy. The WH1000XM4 Touch Sensor controls to pause play skip tracks, regulate volume, turn on your voice assistant, and answer phone calls.
With multipoint connection, Sony headphones will also be paired with two Bluetooth devices on the same time, Bluetooth version: 5.0 and frequency range: 2.4GHz band (2.4000GHz-2.4835GHz), Effective Range : Line of sight approx. 30ft (10m)
Driver Unit : 40mm dome type (CCAW Voice coil), Plug : Gold-plated L-shaped stereo mini plug, Cord Length : Headphone cable (approx. 1.2m, OFC strands, gold-plated stereo mini plug)